Finding the Fourth Proportional to 11,915.59, 16,443.05 and 6,610.32

Step by Step Solution

1. Step 1: Write the proportion equation
   11,915.59 : 16,443.05 = 6,610.32 : x
2. Step 2: Convert to fraction form
   11,915.59/16,443.05 = 6,610.32/x
3. Step 3: Cross multiply
   11,915.59x = 16,443.05 × 6,610.32
4. Step 4: Simplify right side
   11,915.59x = 108,693,822.28
5. Step 5: Solve for x
   x = 108,693,822.28/11,915.59
6. Step 6: Final answer
   x = 9,121.98