Michael Dell founded Dell Inc. in 1984 at the age of 19, starting the company from his dorm room at the University of Texas at Austin. Dell believed that selling personal computers directly to customers would be more efficient than the traditional retail model. Dell Inc. grew rapidly and became one of the largest personal computer sellers in the world. As of 2014, Michael Dell's net worth was estimated to be $22.4 billion, making him one of the richest people in the world.