Finding the Fourth Proportional to 8,544.49, 12,818.10 and 3,279.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,544.49 : 12,818.10 = 3,279.29 : x
2. Step 2: Convert to fraction form
   8,544.49/12,818.10 = 3,279.29/x
3. Step 3: Cross multiply
   8,544.49x = 12,818.10 × 3,279.29
4. Step 4: Simplify right side
   8,544.49x = 42,034,196.91
5. Step 5: Solve for x
   x = 42,034,196.91/8,544.49
6. Step 6: Final answer
   x = 4,919.45