Finding the Fourth Proportional to 31,638.28, 43,660.22 and 17,490.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,638.28 : 43,660.22 = 17,490.82 : x
2. Step 2: Convert to fraction form
   31,638.28/43,660.22 = 17,490.82/x
3. Step 3: Cross multiply
   31,638.28x = 43,660.22 × 17,490.82
4. Step 4: Simplify right side
   31,638.28x = 763,653,049.18
5. Step 5: Solve for x
   x = 763,653,049.18/31,638.28
6. Step 6: Final answer
   x = 24,137.00