Finding the Fourth Proportional to 11,081.59, 16,609.17 and 5,150.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,081.59 : 16,609.17 = 5,150.47 : x
2. Step 2: Convert to fraction form
   11,081.59/16,609.17 = 5,150.47/x
3. Step 3: Cross multiply
   11,081.59x = 16,609.17 × 5,150.47
4. Step 4: Simplify right side
   11,081.59x = 85,545,009.60
5. Step 5: Solve for x
   x = 85,545,009.60/11,081.59
6. Step 6: Final answer
   x = 7,719.56