Finding the Fourth Proportional to 22,872.54, 31,563.90 and 12,800.87

Step by Step Solution

1. Step 1: Write the proportion equation
   22,872.54 : 31,563.90 = 12,800.87 : x
2. Step 2: Convert to fraction form
   22,872.54/31,563.90 = 12,800.87/x
3. Step 3: Cross multiply
   22,872.54x = 31,563.90 × 12,800.87
4. Step 4: Simplify right side
   22,872.54x = 404,045,222.77
5. Step 5: Solve for x
   x = 404,045,222.77/22,872.54
6. Step 6: Final answer
   x = 17,665.08