Finding the Fourth Proportional to 16,216.96, 22,377.84 and 9,144.48

Step by Step Solution

1. Step 1: Write the proportion equation
   16,216.96 : 22,377.84 = 9,144.48 : x
2. Step 2: Convert to fraction form
   16,216.96/22,377.84 = 9,144.48/x
3. Step 3: Cross multiply
   16,216.96x = 22,377.84 × 9,144.48
4. Step 4: Simplify right side
   16,216.96x = 204,633,710.32
5. Step 5: Solve for x
   x = 204,633,710.32/16,216.96
6. Step 6: Final answer
   x = 12,618.50