Finding the Fourth Proportional to 9,125.31, 12,581.52 and 7,615.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,125.31 : 12,581.52 = 7,615.05 : x
2. Step 2: Convert to fraction form
   9,125.31/12,581.52 = 7,615.05/x
3. Step 3: Cross multiply
   9,125.31x = 12,581.52 × 7,615.05
4. Step 4: Simplify right side
   9,125.31x = 95,808,903.88
5. Step 5: Solve for x
   x = 95,808,903.88/9,125.31
6. Step 6: Final answer
   x = 10,499.25