Finding the Fourth Proportional to 22,642.83, 31,244.82 and 12,570.17

Step by Step Solution

1. Step 1: Write the proportion equation
   22,642.83 : 31,244.82 = 12,570.17 : x
2. Step 2: Convert to fraction form
   22,642.83/31,244.82 = 12,570.17/x
3. Step 3: Cross multiply
   22,642.83x = 31,244.82 × 12,570.17
4. Step 4: Simplify right side
   22,642.83x = 392,752,847.42
5. Step 5: Solve for x
   x = 392,752,847.42/22,642.83
6. Step 6: Final answer
   x = 17,345.57