Finding the Fourth Proportional to 22,648, 31,254.24 and 12,712

Step by Step Solution

1. Step 1: Write the proportion equation
   22,648 : 31,254.24 = 12,712 : x
2. Step 2: Convert to fraction form
   22,648/31,254.24 = 12,712/x
3. Step 3: Cross multiply
   22,648x = 31,254.24 × 12,712
4. Step 4: Simplify right side
   22,648x = 397,303,898.88
5. Step 5: Solve for x
   x = 397,303,898.88/22,648
6. Step 6: Final answer
   x = 17,542.56