Finding the Fourth Proportional to 8,315.50, 12,475.31 and 2,472.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,315.50 : 12,475.31 = 2,472.09 : x
2. Step 2: Convert to fraction form
   8,315.50/12,475.31 = 2,472.09/x
3. Step 3: Cross multiply
   8,315.50x = 12,475.31 × 2,472.09
4. Step 4: Simplify right side
   8,315.50x = 30,840,089.10
5. Step 5: Solve for x
   x = 30,840,089.10/8,315.50
6. Step 6: Final answer
   x = 3,708.75