Finding the Fourth Proportional to 5,443.20, 7,511.74 and 3,085.49

Step by Step Solution

1. Step 1: Write the proportion equation
   5,443.20 : 7,511.74 = 3,085.49 : x
2. Step 2: Convert to fraction form
   5,443.20/7,511.74 = 3,085.49/x
3. Step 3: Cross multiply
   5,443.20x = 7,511.74 × 3,085.49
4. Step 4: Simplify right side
   5,443.20x = 23,177,409.72
5. Step 5: Solve for x
   x = 23,177,409.72/5,443.20
6. Step 6: Final answer
   x = 4,258.05