Finding the Fourth Proportional to 5,522.10, 8,287.20 and 3,672.60

Step by Step Solution

1. Step 1: Write the proportion equation
   5,522.10 : 8,287.20 = 3,672.60 : x
2. Step 2: Convert to fraction form
   5,522.10/8,287.20 = 3,672.60/x
3. Step 3: Cross multiply
   5,522.10x = 8,287.20 × 3,672.60
4. Step 4: Simplify right side
   5,522.10x = 30,435,570.72
5. Step 5: Solve for x
   x = 30,435,570.72/5,522.10
6. Step 6: Final answer
   x = 5,511.59