Answer
Average Atomic Mass = 207.2 amu
Element = Lead (Pb)
Work Step by Step
Average Atomic Mass = $0.014*203.973+0.241*295.9745+0.2210*206.9759+0.5249*207.9766=207.2$ amu
Lead (Pb) also has an average atomic mass of 207.2. Therefore, this element is most likely Lead.