Finding the Fourth Proportional to 6,086.63, 8,391.93 and 5,079.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,086.63 : 8,391.93 = 5,079.78 : x
2. Step 2: Convert to fraction form
   6,086.63/8,391.93 = 5,079.78/x
3. Step 3: Cross multiply
   6,086.63x = 8,391.93 × 5,079.78
4. Step 4: Simplify right side
   6,086.63x = 42,629,158.18
5. Step 5: Solve for x
   x = 42,629,158.18/6,086.63
6. Step 6: Final answer
   x = 7,003.74