Finding the Fourth Proportional to 9,115.30, 12,735.50 and 9,115.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,115.30 : 12,735.50 = 9,115.30 : x
2. Step 2: Convert to fraction form
   9,115.30/12,735.50 = 9,115.30/x
3. Step 3: Cross multiply
   9,115.30x = 12,735.50 × 9,115.30
4. Step 4: Simplify right side
   9,115.30x = 116,087,903.15
5. Step 5: Solve for x
   x = 116,087,903.15/9,115.30
6. Step 6: Final answer
   x = 12,735.50