Finding the Fourth Proportional to 16,234.72, 22,403.46 and 9,161.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,234.72 : 22,403.46 = 9,161.80 : x
2. Step 2: Convert to fraction form
   16,234.72/22,403.46 = 9,161.80/x
3. Step 3: Cross multiply
   16,234.72x = 22,403.46 × 9,161.80
4. Step 4: Simplify right side
   16,234.72x = 205,256,019.83
5. Step 5: Solve for x
   x = 205,256,019.83/16,234.72
6. Step 6: Final answer
   x = 12,643.03