Finding the Fourth Proportional to 11,039.83, 15,240.61 and 8,516.27

Step by Step Solution

1. Step 1: Write the proportion equation
   11,039.83 : 15,240.61 = 8,516.27 : x
2. Step 2: Convert to fraction form
   11,039.83/15,240.61 = 8,516.27/x
3. Step 3: Cross multiply
   11,039.83x = 15,240.61 × 8,516.27
4. Step 4: Simplify right side
   11,039.83x = 129,793,150.57
5. Step 5: Solve for x
   x = 129,793,150.57/11,039.83
6. Step 6: Final answer
   x = 11,756.81