Finding the Fourth Proportional to 22,648.31, 31,254.05 and 12,576.47

Step by Step Solution

1. Step 1: Write the proportion equation
   22,648.31 : 31,254.05 = 12,576.47 : x
2. Step 2: Convert to fraction form
   22,648.31/31,254.05 = 12,576.47/x
3. Step 3: Cross multiply
   22,648.31x = 31,254.05 × 12,576.47
4. Step 4: Simplify right side
   22,648.31x = 393,065,497.37
5. Step 5: Solve for x
   x = 393,065,497.37/22,648.31
6. Step 6: Final answer
   x = 17,355.18