Finding the Fourth Proportional to 9,610.80, 14,404.05 and 8,565.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,610.80 : 14,404.05 = 8,565.90 : x
2. Step 2: Convert to fraction form
   9,610.80/14,404.05 = 8,565.90/x
3. Step 3: Cross multiply
   9,610.80x = 14,404.05 × 8,565.90
4. Step 4: Simplify right side
   9,610.80x = 123,383,651.90
5. Step 5: Solve for x
   x = 123,383,651.90/9,610.80
6. Step 6: Final answer
   x = 12,838.02