Finding the Fourth Proportional to 17,638.58, 24,340.77 and 9,681.55

Step by Step Solution

1. Step 1: Write the proportion equation
   17,638.58 : 24,340.77 = 9,681.55 : x
2. Step 2: Convert to fraction form
   17,638.58/24,340.77 = 9,681.55/x
3. Step 3: Cross multiply
   17,638.58x = 24,340.77 × 9,681.55
4. Step 4: Simplify right side
   17,638.58x = 235,656,320.94
5. Step 5: Solve for x
   x = 235,656,320.94/17,638.58
6. Step 6: Final answer
   x = 13,360.28