Finding the Fourth Proportional to 22,872.28, 31,563.03 and 12,801.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,872.28 : 31,563.03 = 12,801.55 : x
2. Step 2: Convert to fraction form
   22,872.28/31,563.03 = 12,801.55/x
3. Step 3: Cross multiply
   22,872.28x = 31,563.03 × 12,801.55
4. Step 4: Simplify right side
   22,872.28x = 404,055,706.70
5. Step 5: Solve for x
   x = 404,055,706.70/22,872.28
6. Step 6: Final answer
   x = 17,665.74