Finding the Fourth Proportional to 23,131.92, 31,922.02 and 12,521.54

Step by Step Solution

1. Step 1: Write the proportion equation
   23,131.92 : 31,922.02 = 12,521.54 : x
2. Step 2: Convert to fraction form
   23,131.92/31,922.02 = 12,521.54/x
3. Step 3: Cross multiply
   23,131.92x = 31,922.02 × 12,521.54
4. Step 4: Simplify right side
   23,131.92x = 399,712,850.31
5. Step 5: Solve for x
   x = 399,712,850.31/23,131.92
6. Step 6: Final answer
   x = 17,279.71