Finding the Fourth Proportional to 23,002.20, 31,740.24 and 12,929.52

Step by Step Solution

1. Step 1: Write the proportion equation
   23,002.20 : 31,740.24 = 12,929.52 : x
2. Step 2: Convert to fraction form
   23,002.20/31,740.24 = 12,929.52/x
3. Step 3: Cross multiply
   23,002.20x = 31,740.24 × 12,929.52
4. Step 4: Simplify right side
   23,002.20x = 410,386,067.88
5. Step 5: Solve for x
   x = 410,386,067.88/23,002.20
6. Step 6: Final answer
   x = 17,841.17