Finding the Fourth Proportional to 16,217.83, 22,380.33 and 9,144.28

Step by Step Solution

1. Step 1: Write the proportion equation
   16,217.83 : 22,380.33 = 9,144.28 : x
2. Step 2: Convert to fraction form
   16,217.83/22,380.33 = 9,144.28/x
3. Step 3: Cross multiply
   16,217.83x = 22,380.33 × 9,144.28
4. Step 4: Simplify right side
   16,217.83x = 204,652,004.01
5. Step 5: Solve for x
   x = 204,652,004.01/16,217.83
6. Step 6: Final answer
   x = 12,618.95