Finding the Fourth Proportional to 17,864.55, 24,597 and 15,170.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,864.55 : 24,597 = 15,170.15 : x
2. Step 2: Convert to fraction form
   17,864.55/24,597 = 15,170.15/x
3. Step 3: Cross multiply
   17,864.55x = 24,597 × 15,170.15
4. Step 4: Simplify right side
   17,864.55x = 373,140,241.04
5. Step 5: Solve for x
   x = 373,140,241.04/17,864.55
6. Step 6: Final answer
   x = 20,887.19