Finding the Fourth Proportional to 12,001.17, 16,565.86 and 7,913.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,001.17 : 16,565.86 = 7,913.31 : x
2. Step 2: Convert to fraction form
   12,001.17/16,565.86 = 7,913.31/x
3. Step 3: Cross multiply
   12,001.17x = 16,565.86 × 7,913.31
4. Step 4: Simplify right side
   12,001.17x = 131,090,785.60
5. Step 5: Solve for x
   x = 131,090,785.60/12,001.17
6. Step 6: Final answer
   x = 10,923.17