Finding the Fourth Proportional to 23,150.85, 31,948.06 and 12,540.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,150.85 : 31,948.06 = 12,540.50 : x
2. Step 2: Convert to fraction form
   23,150.85/31,948.06 = 12,540.50/x
3. Step 3: Cross multiply
   23,150.85x = 31,948.06 × 12,540.50
4. Step 4: Simplify right side
   23,150.85x = 400,644,646.43
5. Step 5: Solve for x
   x = 400,644,646.43/23,150.85
6. Step 6: Final answer
   x = 17,305.83