Finding the Fourth Proportional to 16,109.78, 22,231.17 and 9,036.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,109.78 : 22,231.17 = 9,036.18 : x
2. Step 2: Convert to fraction form
   16,109.78/22,231.17 = 9,036.18/x
3. Step 3: Cross multiply
   16,109.78x = 22,231.17 × 9,036.18
4. Step 4: Simplify right side
   16,109.78x = 200,884,853.73
5. Step 5: Solve for x
   x = 200,884,853.73/16,109.78
6. Step 6: Final answer
   x = 12,469.75