Finding the Fourth Proportional to 16,821.72, 23,213.98 and 9,752.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,821.72 : 23,213.98 = 9,752.24 : x
2. Step 2: Convert to fraction form
   16,821.72/23,213.98 = 9,752.24/x
3. Step 3: Cross multiply
   16,821.72x = 23,213.98 × 9,752.24
4. Step 4: Simplify right side
   16,821.72x = 226,388,304.32
5. Step 5: Solve for x
   x = 226,388,304.32/16,821.72
6. Step 6: Final answer
   x = 13,458.09