Finding the Fourth Proportional to 8,919.86, 13,385.94 and 3,076.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,919.86 : 13,385.94 = 3,076.47 : x
2. Step 2: Convert to fraction form
   8,919.86/13,385.94 = 3,076.47/x
3. Step 3: Cross multiply
   8,919.86x = 13,385.94 × 3,076.47
4. Step 4: Simplify right side
   8,919.86x = 41,181,442.83
5. Step 5: Solve for x
   x = 41,181,442.83/8,919.86
6. Step 6: Final answer
   x = 4,616.83