Finding the Fourth Proportional to 31,260.72, 43,140.31 and 17,649.48

Step by Step Solution

1. Step 1: Write the proportion equation
   31,260.72 : 43,140.31 = 17,649.48 : x
2. Step 2: Convert to fraction form
   31,260.72/43,140.31 = 17,649.48/x
3. Step 3: Cross multiply
   31,260.72x = 43,140.31 × 17,649.48
4. Step 4: Simplify right side
   31,260.72x = 761,404,038.54
5. Step 5: Solve for x
   x = 761,404,038.54/31,260.72
6. Step 6: Final answer
   x = 24,356.57