Finding the Fourth Proportional to 8,046.78, 12,067.80 and 3,115.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,046.78 : 12,067.80 = 3,115.25 : x
2. Step 2: Convert to fraction form
   8,046.78/12,067.80 = 3,115.25/x
3. Step 3: Cross multiply
   8,046.78x = 12,067.80 × 3,115.25
4. Step 4: Simplify right side
   8,046.78x = 37,594,153.61
5. Step 5: Solve for x
   x = 37,594,153.61/8,046.78
6. Step 6: Final answer
   x = 4,671.95