Finding the Fourth Proportional to 17,655.93, 24,381 and 13,171.89

Step by Step Solution

1. Step 1: Write the proportion equation
   17,655.93 : 24,381 = 13,171.89 : x
2. Step 2: Convert to fraction form
   17,655.93/24,381 = 13,171.89/x
3. Step 3: Cross multiply
   17,655.93x = 24,381 × 13,171.89
4. Step 4: Simplify right side
   17,655.93x = 321,143,850.09
5. Step 5: Solve for x
   x = 321,143,850.09/17,655.93
6. Step 6: Final answer
   x = 18,189.01