Finding the Fourth Proportional to 8,144.72, 12,221.33 and 4,446.26

Step by Step Solution

1. Step 1: Write the proportion equation
   8,144.72 : 12,221.33 = 4,446.26 : x
2. Step 2: Convert to fraction form
   8,144.72/12,221.33 = 4,446.26/x
3. Step 3: Cross multiply
   8,144.72x = 12,221.33 × 4,446.26
4. Step 4: Simplify right side
   8,144.72x = 54,339,173.22
5. Step 5: Solve for x
   x = 54,339,173.22/8,144.72
6. Step 6: Final answer
   x = 6,671.71