Finding the Fourth Proportional to 22,649.31, 31,256.12 and 12,577.77

Step by Step Solution

1. Step 1: Write the proportion equation
   22,649.31 : 31,256.12 = 12,577.77 : x
2. Step 2: Convert to fraction form
   22,649.31/31,256.12 = 12,577.77/x
3. Step 3: Cross multiply
   22,649.31x = 31,256.12 × 12,577.77
4. Step 4: Simplify right side
   22,649.31x = 393,132,288.45
5. Step 5: Solve for x
   x = 393,132,288.45/22,649.31
6. Step 6: Final answer
   x = 17,357.36