Finding the Fourth Proportional to 16,239.43, 22,409.35 and 9,164.89

Step by Step Solution

1. Step 1: Write the proportion equation
   16,239.43 : 22,409.35 = 9,164.89 : x
2. Step 2: Convert to fraction form
   16,239.43/22,409.35 = 9,164.89/x
3. Step 3: Cross multiply
   16,239.43x = 22,409.35 × 9,164.89
4. Step 4: Simplify right side
   16,239.43x = 205,379,227.72
5. Step 5: Solve for x
   x = 205,379,227.72/16,239.43
6. Step 6: Final answer
   x = 12,646.95