Finding the Fourth Proportional to 22,719.31, 31,354.36 and 12,650.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,719.31 : 31,354.36 = 12,650.31 : x
2. Step 2: Convert to fraction form
   22,719.31/31,354.36 = 12,650.31/x
3. Step 3: Cross multiply
   22,719.31x = 31,354.36 × 12,650.31
4. Step 4: Simplify right side
   22,719.31x = 396,642,342.23
5. Step 5: Solve for x
   x = 396,642,342.23/22,719.31
6. Step 6: Final answer
   x = 17,458.38