Shell has made a fourth hydrocarbon discovery offshore Namibia, one of the hot spots in offshore exploration right now. The UK-based supermajor said on Wednesday that it had confirmed the presence of hydrocarbons in the fourth exploration well, Lesedi-1X, it completed drilling offshore the African country. "Further evaluation is required to determine development potential," Shell said in a statement carried by Reuters. Last month, Zoë Yujnovich, Integrated Gas and Upstream Director at Shell, said on Shell's Capital…