Finding the Fourth Proportional to 31,638.69, 43,658.46 and 17,491.23

Step by Step Solution

1. Step 1: Write the proportion equation
   31,638.69 : 43,658.46 = 17,491.23 : x
2. Step 2: Convert to fraction form
   31,638.69/43,658.46 = 17,491.23/x
3. Step 3: Cross multiply
   31,638.69x = 43,658.46 × 17,491.23
4. Step 4: Simplify right side
   31,638.69x = 763,640,165.31
5. Step 5: Solve for x
   x = 763,640,165.31/31,638.69
6. Step 6: Final answer
   x = 24,136.28