Finding the Fourth Proportional to 16,399.72, 22,631.33 and 9,325.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,399.72 : 22,631.33 = 9,325.98 : x
2. Step 2: Convert to fraction form
   16,399.72/22,631.33 = 9,325.98/x
3. Step 3: Cross multiply
   16,399.72x = 22,631.33 × 9,325.98
4. Step 4: Simplify right side
   16,399.72x = 211,059,330.95
5. Step 5: Solve for x
   x = 211,059,330.95/16,399.72
6. Step 6: Final answer
   x = 12,869.69