Finding the Fourth Proportional to 5,385.59, 7,432.81 and 3,028.18

Step by Step Solution

1. Step 1: Write the proportion equation
   5,385.59 : 7,432.81 = 3,028.18 : x
2. Step 2: Convert to fraction form
   5,385.59/7,432.81 = 3,028.18/x
3. Step 3: Cross multiply
   5,385.59x = 7,432.81 × 3,028.18
4. Step 4: Simplify right side
   5,385.59x = 22,507,886.59
5. Step 5: Solve for x
   x = 22,507,886.59/5,385.59
6. Step 6: Final answer
   x = 4,179.28