Finding the Fourth Proportional to 9,165.30, 12,382.88 and 9,165.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,165.30 : 12,382.88 = 9,165.30 : x
2. Step 2: Convert to fraction form
   9,165.30/12,382.88 = 9,165.30/x
3. Step 3: Cross multiply
   9,165.30x = 12,382.88 × 9,165.30
4. Step 4: Simplify right side
   9,165.30x = 113,492,764.24
5. Step 5: Solve for x
   x = 113,492,764.24/9,165.30
6. Step 6: Final answer
   x = 12,382.88