Finding the Fourth Proportional to 22,648.16, 31,254.72 and 12,576.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,648.16 : 31,254.72 = 12,576.80 : x
2. Step 2: Convert to fraction form
   22,648.16/31,254.72 = 12,576.80/x
3. Step 3: Cross multiply
   22,648.16x = 31,254.72 × 12,576.80
4. Step 4: Simplify right side
   22,648.16x = 393,084,362.50
5. Step 5: Solve for x
   x = 393,084,362.50/22,648.16
6. Step 6: Final answer
   x = 17,356.13