Finding the Fourth Proportional to 31,636.86, 43,659.78 and 17,490.62

Step by Step Solution

1. Step 1: Write the proportion equation
   31,636.86 : 43,659.78 = 17,490.62 : x
2. Step 2: Convert to fraction form
   31,636.86/43,659.78 = 17,490.62/x
3. Step 3: Cross multiply
   31,636.86x = 43,659.78 × 17,490.62
4. Step 4: Simplify right side
   31,636.86x = 763,636,591.32
5. Step 5: Solve for x
   x = 763,636,591.32/31,636.86
6. Step 6: Final answer
   x = 24,137.56