Finding the Fourth Proportional to 31,638.30, 43,657.83 and 17,488.86

Step by Step Solution

1. Step 1: Write the proportion equation
   31,638.30 : 43,657.83 = 17,488.86 : x
2. Step 2: Convert to fraction form
   31,638.30/43,657.83 = 17,488.86/x
3. Step 3: Cross multiply
   31,638.30x = 43,657.83 × 17,488.86
4. Step 4: Simplify right side
   31,638.30x = 763,525,676.77
5. Step 5: Solve for x
   x = 763,525,676.77/31,638.30
6. Step 6: Final answer
   x = 24,132.96