Finding the Fourth Proportional to 23,151.31, 31,948.70 and 12,540.97

Step by Step Solution

1. Step 1: Write the proportion equation
   23,151.31 : 31,948.70 = 12,540.97 : x
2. Step 2: Convert to fraction form
   23,151.31/31,948.70 = 12,540.97/x
3. Step 3: Cross multiply
   23,151.31x = 31,948.70 × 12,540.97
4. Step 4: Simplify right side
   23,151.31x = 400,667,688.24
5. Step 5: Solve for x
   x = 400,667,688.24/23,151.31
6. Step 6: Final answer
   x = 17,306.48