Finding the Fourth Proportional to 16,290.27, 22,481.42 and 9,119.75

Step by Step Solution

1. Step 1: Write the proportion equation
   16,290.27 : 22,481.42 = 9,119.75 : x
2. Step 2: Convert to fraction form
   16,290.27/22,481.42 = 9,119.75/x
3. Step 3: Cross multiply
   16,290.27x = 22,481.42 × 9,119.75
4. Step 4: Simplify right side
   16,290.27x = 205,024,772.04
5. Step 5: Solve for x
   x = 205,024,772.04/16,290.27
6. Step 6: Final answer
   x = 12,585.72