Finding the Fourth Proportional to 16,216.38, 22,379.87 and 9,048.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,216.38 : 22,379.87 = 9,048.55 : x
2. Step 2: Convert to fraction form
   16,216.38/22,379.87 = 9,048.55/x
3. Step 3: Cross multiply
   16,216.38x = 22,379.87 × 9,048.55
4. Step 4: Simplify right side
   16,216.38x = 202,505,372.69
5. Step 5: Solve for x
   x = 202,505,372.69/16,216.38
6. Step 6: Final answer
   x = 12,487.71