Finding the Fourth Proportional to 11,009.72, 16,516.30 and 3,612.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,009.72 : 16,516.30 = 3,612.50 : x
2. Step 2: Convert to fraction form
   11,009.72/16,516.30 = 3,612.50/x
3. Step 3: Cross multiply
   11,009.72x = 16,516.30 × 3,612.50
4. Step 4: Simplify right side
   11,009.72x = 59,665,042.14
5. Step 5: Solve for x
   x = 59,665,042.14/11,009.72
6. Step 6: Final answer
   x = 5,419.31