Finding the Fourth Proportional to 17,487.39, 24,142.38 and 13,391.43

Step by Step Solution

1. Step 1: Write the proportion equation
   17,487.39 : 24,142.38 = 13,391.43 : x
2. Step 2: Convert to fraction form
   17,487.39/24,142.38 = 13,391.43/x
3. Step 3: Cross multiply
   17,487.39x = 24,142.38 × 13,391.43
4. Step 4: Simplify right side
   17,487.39x = 323,300,991.80
5. Step 5: Solve for x
   x = 323,300,991.80/17,487.39
6. Step 6: Final answer
   x = 18,487.66