Finding the Fourth Proportional to 23,151.37, 31,948.68 and 12,540.37

Step by Step Solution

1. Step 1: Write the proportion equation
   23,151.37 : 31,948.68 = 12,540.37 : x
2. Step 2: Convert to fraction form
   23,151.37/31,948.68 = 12,540.37/x
3. Step 3: Cross multiply
   23,151.37x = 31,948.68 × 12,540.37
4. Step 4: Simplify right side
   23,151.37x = 400,648,268.21
5. Step 5: Solve for x
   x = 400,648,268.21/23,151.37
6. Step 6: Final answer
   x = 17,305.60