Finding the Fourth Proportional to 16,297.56, 22,496.42 and 9,921.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,297.56 : 22,496.42 = 9,921.24 : x
2. Step 2: Convert to fraction form
   16,297.56/22,496.42 = 9,921.24/x
3. Step 3: Cross multiply
   16,297.56x = 22,496.42 × 9,921.24
4. Step 4: Simplify right side
   16,297.56x = 223,192,332.35
5. Step 5: Solve for x
   x = 223,192,332.35/16,297.56
6. Step 6: Final answer
   x = 13,694.83