Finding the Fourth Proportional to 8,048.21, 12,076.42 and 3,891.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,048.21 : 12,076.42 = 3,891.78 : x
2. Step 2: Convert to fraction form
   8,048.21/12,076.42 = 3,891.78/x
3. Step 3: Cross multiply
   8,048.21x = 12,076.42 × 3,891.78
4. Step 4: Simplify right side
   8,048.21x = 46,998,769.83
5. Step 5: Solve for x
   x = 46,998,769.83/8,048.21
6. Step 6: Final answer
   x = 5,839.66