Finding the Fourth Proportional to 12,331.12, 17,016.06 and 7,615.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,331.12 : 17,016.06 = 7,615.48 : x
2. Step 2: Convert to fraction form
   12,331.12/17,016.06 = 7,615.48/x
3. Step 3: Cross multiply
   12,331.12x = 17,016.06 × 7,615.48
4. Step 4: Simplify right side
   12,331.12x = 129,585,464.61
5. Step 5: Solve for x
   x = 129,585,464.61/12,331.12
6. Step 6: Final answer
   x = 10,508.82