Finding the Fourth Proportional to 5,498.80, 8,245.86 and 2,121.04

Step by Step Solution

1. Step 1: Write the proportion equation
   5,498.80 : 8,245.86 = 2,121.04 : x
2. Step 2: Convert to fraction form
   5,498.80/8,245.86 = 2,121.04/x
3. Step 3: Cross multiply
   5,498.80x = 8,245.86 × 2,121.04
4. Step 4: Simplify right side
   5,498.80x = 17,489,798.89
5. Step 5: Solve for x
   x = 17,489,798.89/5,498.80
6. Step 6: Final answer
   x = 3,180.66