Finding the Fourth Proportional to 16,109.31, 22,231.03 and 8,939.36

Step by Step Solution

1. Step 1: Write the proportion equation
   16,109.31 : 22,231.03 = 8,939.36 : x
2. Step 2: Convert to fraction form
   16,109.31/22,231.03 = 8,939.36/x
3. Step 3: Cross multiply
   16,109.31x = 22,231.03 × 8,939.36
4. Step 4: Simplify right side
   16,109.31x = 198,731,198.90
5. Step 5: Solve for x
   x = 198,731,198.90/16,109.31
6. Step 6: Final answer
   x = 12,336.42