Finding the Fourth Proportional to 5,078.39, 7,008.14 and 2,840.27

Step by Step Solution

1. Step 1: Write the proportion equation
   5,078.39 : 7,008.14 = 2,840.27 : x
2. Step 2: Convert to fraction form
   5,078.39/7,008.14 = 2,840.27/x
3. Step 3: Cross multiply
   5,078.39x = 7,008.14 × 2,840.27
4. Step 4: Simplify right side
   5,078.39x = 19,904,981.86
5. Step 5: Solve for x
   x = 19,904,981.86/5,078.39
6. Step 6: Final answer
   x = 3,919.55