Finding the Fourth Proportional to 12,059.71, 16,635.62 and 8,516.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,059.71 : 16,635.62 = 8,516.77 : x
2. Step 2: Convert to fraction form
   12,059.71/16,635.62 = 8,516.77/x
3. Step 3: Cross multiply
   12,059.71x = 16,635.62 × 8,516.77
4. Step 4: Simplify right side
   12,059.71x = 141,681,665.17
5. Step 5: Solve for x
   x = 141,681,665.17/12,059.71
6. Step 6: Final answer
   x = 11,748.35