Forbes describes the Aga Khan as one of the world's fifteen richest royals. Īga Khan's net worth has been estimated at $13.3 billion. The Aga Khan is a business magnate with British and Portuguese citizenship, as well as a racehorse owner and breeder. According to the Aga Khan III as mentioned in his memoirs, he has actual 'Divine power, guidance, and leadership (authority).' The Institution of Imamate has continued to present day with the Aga Khan IV as the 49th Imam of the Ismaili Community. His grandfather, Aga Khan III, states in his memoirs that the Shias had a 'need (for) Divine guidance' after the Prophet of Islam's death, this need being fulfilled by the Imamate. The Aga Khan claims direct lineal descent from the Islamic prophet Muhammad through Muhammad's cousin and son-in-law, Ali, who is considered an imam by Nizari Ismailis, and Ali's wife Fatima, Muhammad's daughter from his first marriage. He has held the position of imam and the title of Aga Khan since 11 July 1957, when, at the age of 20, he succeeded his grandfather, Sir Sultan Muhammad Shah Aga Khan III. Shah Karim al-Husayni ( Arabic: شاه كريم الحسيني, romanized: Shāh Karīm al-Ḥusaynī born 13 December 1936), known by the religious title Mawlānā Hazar Imam by his Ismaili followers and elsewhere as Aga Khan IV, is the 49th and current Imam of Nizari Ismailis.
