Police believe his bike was struck from the rear by a motorist who then did not stop.
Another driver saw the unconscious man, pulled over, and called 911. Yeboah was airlifted to Inova Fairfax Hospital, but he died several hours later.
Prince William County Police believe the suspect vehicle may be gray or silver in color.
Yeboah was 26 years old, and, according to family members, had emigrated to the U.S. only about six months ago from Ghana.
He was riding on the paved shoulder of Lee Highway.