Finding the Fourth Proportional to 9,132.30, 12,759.30 and 9,132.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,132.30 : 12,759.30 = 9,132.30 : x
2. Step 2: Convert to fraction form
   9,132.30/12,759.30 = 9,132.30/x
3. Step 3: Cross multiply
   9,132.30x = 12,759.30 × 9,132.30
4. Step 4: Simplify right side
   9,132.30x = 116,521,755.39
5. Step 5: Solve for x
   x = 116,521,755.39/9,132.30
6. Step 6: Final answer
   x = 12,759.30