Finding the Fourth Proportional to 22,752.45, 31,398.98 and 12,680.37

Step by Step Solution

1. Step 1: Write the proportion equation
   22,752.45 : 31,398.98 = 12,680.37 : x
2. Step 2: Convert to fraction form
   22,752.45/31,398.98 = 12,680.37/x
3. Step 3: Cross multiply
   22,752.45x = 31,398.98 × 12,680.37
4. Step 4: Simplify right side
   22,752.45x = 398,150,620.62
5. Step 5: Solve for x
   x = 398,150,620.62/22,752.45
6. Step 6: Final answer
   x = 17,499.24