Finding the Fourth Proportional to 22,648.72, 31,254.18 and 12,577.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,648.72 : 31,254.18 = 12,577.80 : x
2. Step 2: Convert to fraction form
   22,648.72/31,254.18 = 12,577.80/x
3. Step 3: Cross multiply
   22,648.72x = 31,254.18 × 12,577.80
4. Step 4: Simplify right side
   22,648.72x = 393,108,825.20
5. Step 5: Solve for x
   x = 393,108,825.20/22,648.72
6. Step 6: Final answer
   x = 17,356.78