Finding the Fourth Proportional to 8,821.98, 13,234.59 and 3,279.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,821.98 : 13,234.59 = 3,279.15 : x
2. Step 2: Convert to fraction form
   8,821.98/13,234.59 = 3,279.15/x
3. Step 3: Cross multiply
   8,821.98x = 13,234.59 × 3,279.15
4. Step 4: Simplify right side
   8,821.98x = 43,398,205.80
5. Step 5: Solve for x
   x = 43,398,205.80/8,821.98
6. Step 6: Final answer
   x = 4,919.33