Finding the Fourth Proportional to 10,615.27, 14,615.61 and 9,631.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,615.27 : 14,615.61 = 9,631.12 : x
2. Step 2: Convert to fraction form
   10,615.27/14,615.61 = 9,631.12/x
3. Step 3: Cross multiply
   10,615.27x = 14,615.61 × 9,631.12
4. Step 4: Simplify right side
   10,615.27x = 140,764,693.78
5. Step 5: Solve for x
   x = 140,764,693.78/10,615.27
6. Step 6: Final answer
   x = 13,260.59