Finding the Fourth Proportional to 17,524.50, 24,154.99 and 12,421.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,524.50 : 24,154.99 = 12,421.72 : x
2. Step 2: Convert to fraction form
   17,524.50/24,154.99 = 12,421.72/x
3. Step 3: Cross multiply
   17,524.50x = 24,154.99 × 12,421.72
4. Step 4: Simplify right side
   17,524.50x = 300,046,522.38
5. Step 5: Solve for x
   x = 300,046,522.38/17,524.50
6. Step 6: Final answer
   x = 17,121.55