Finding the Fourth Proportional to 5,443.80, 7,512.04 and 3,085.60

Step by Step Solution

1. Step 1: Write the proportion equation
   5,443.80 : 7,512.04 = 3,085.60 : x
2. Step 2: Convert to fraction form
   5,443.80/7,512.04 = 3,085.60/x
3. Step 3: Cross multiply
   5,443.80x = 7,512.04 × 3,085.60
4. Step 4: Simplify right side
   5,443.80x = 23,179,150.62
5. Step 5: Solve for x
   x = 23,179,150.62/5,443.80
6. Step 6: Final answer
   x = 4,257.90