Finding the Fourth Proportional to 22,648.31, 31,253.62 and 12,577.40

Step by Step Solution

1. Step 1: Write the proportion equation
   22,648.31 : 31,253.62 = 12,577.40 : x
2. Step 2: Convert to fraction form
   22,648.31/31,253.62 = 12,577.40/x
3. Step 3: Cross multiply
   22,648.31x = 31,253.62 × 12,577.40
4. Step 4: Simplify right side
   22,648.31x = 393,089,061.03
5. Step 5: Solve for x
   x = 393,089,061.03/22,648.31
6. Step 6: Final answer
   x = 17,356.22