Finding the Fourth Proportional to 8,086.95, 12,132.15 and 4,578.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,086.95 : 12,132.15 = 4,578.60 : x
2. Step 2: Convert to fraction form
   8,086.95/12,132.15 = 4,578.60/x
3. Step 3: Cross multiply
   8,086.95x = 12,132.15 × 4,578.60
4. Step 4: Simplify right side
   8,086.95x = 55,548,300.62
5. Step 5: Solve for x
   x = 55,548,300.62/8,086.95
6. Step 6: Final answer
   x = 6,868.89