Finding the Fourth Proportional to 22,648.30, 31,253.22 and 12,576.74

Step by Step Solution

1. Step 1: Write the proportion equation
   22,648.30 : 31,253.22 = 12,576.74 : x
2. Step 2: Convert to fraction form
   22,648.30/31,253.22 = 12,576.74/x
3. Step 3: Cross multiply
   22,648.30x = 31,253.22 × 12,576.74
4. Step 4: Simplify right side
   22,648.30x = 393,063,622.10
5. Step 5: Solve for x
   x = 393,063,622.10/22,648.30
6. Step 6: Final answer
   x = 17,355.10