Finding the Fourth Proportional to 5,469.27, 8,205.71 and 2,180.55

Step by Step Solution

1. Step 1: Write the proportion equation
   5,469.27 : 8,205.71 = 2,180.55 : x
2. Step 2: Convert to fraction form
   5,469.27/8,205.71 = 2,180.55/x
3. Step 3: Cross multiply
   5,469.27x = 8,205.71 × 2,180.55
4. Step 4: Simplify right side
   5,469.27x = 17,892,950.04
5. Step 5: Solve for x
   x = 17,892,950.04/5,469.27
6. Step 6: Final answer
   x = 3,271.54