Finding the Fourth Proportional to 23,115.24, 31,899.25 and 12,505.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,115.24 : 31,899.25 = 12,505.10 : x
2. Step 2: Convert to fraction form
   23,115.24/31,899.25 = 12,505.10/x
3. Step 3: Cross multiply
   23,115.24x = 31,899.25 × 12,505.10
4. Step 4: Simplify right side
   23,115.24x = 398,903,167.31
5. Step 5: Solve for x
   x = 398,903,167.31/23,115.24
6. Step 6: Final answer
   x = 17,257.15