Finding the Fourth Proportional to 8,086.80, 12,105.90 and 4,798.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,086.80 : 12,105.90 = 4,798.20 : x
2. Step 2: Convert to fraction form
   8,086.80/12,105.90 = 4,798.20/x
3. Step 3: Cross multiply
   8,086.80x = 12,105.90 × 4,798.20
4. Step 4: Simplify right side
   8,086.80x = 58,086,529.38
5. Step 5: Solve for x
   x = 58,086,529.38/8,086.80
6. Step 6: Final answer
   x = 7,182.88