Finding the Fourth Proportional to 8,144.12, 12,209.98 and 4,449.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,144.12 : 12,209.98 = 4,449.48 : x
2. Step 2: Convert to fraction form
   8,144.12/12,209.98 = 4,449.48/x
3. Step 3: Cross multiply
   8,144.12x = 12,209.98 × 4,449.48
4. Step 4: Simplify right side
   8,144.12x = 54,328,061.81
5. Step 5: Solve for x
   x = 54,328,061.81/8,144.12
6. Step 6: Final answer
   x = 6,670.83