Finding the Fourth Proportional to 5,520.22, 8,272.28 and 2,559.57

Step by Step Solution

1. Step 1: Write the proportion equation
   5,520.22 : 8,272.28 = 2,559.57 : x
2. Step 2: Convert to fraction form
   5,520.22/8,272.28 = 2,559.57/x
3. Step 3: Cross multiply
   5,520.22x = 8,272.28 × 2,559.57
4. Step 4: Simplify right side
   5,520.22x = 21,173,479.72
5. Step 5: Solve for x
   x = 21,173,479.72/5,520.22
6. Step 6: Final answer
   x = 3,835.62