Finding the Fourth Proportional to 5,280.52, 7,906.20 and 3,978.04

Step by Step Solution

1. Step 1: Write the proportion equation
   5,280.52 : 7,906.20 = 3,978.04 : x
2. Step 2: Convert to fraction form
   5,280.52/7,906.20 = 3,978.04/x
3. Step 3: Cross multiply
   5,280.52x = 7,906.20 × 3,978.04
4. Step 4: Simplify right side
   5,280.52x = 31,451,179.85
5. Step 5: Solve for x
   x = 31,451,179.85/5,280.52
6. Step 6: Final answer
   x = 5,956.08