Finding the Fourth Proportional to 17,772.72, 24,521.94 and 10,872.24

Step by Step Solution

1. Step 1: Write the proportion equation
   17,772.72 : 24,521.94 = 10,872.24 : x
2. Step 2: Convert to fraction form
   17,772.72/24,521.94 = 10,872.24/x
3. Step 3: Cross multiply
   17,772.72x = 24,521.94 × 10,872.24
4. Step 4: Simplify right side
   17,772.72x = 266,608,416.95
5. Step 5: Solve for x
   x = 266,608,416.95/17,772.72
6. Step 6: Final answer
   x = 15,000.99