Finding the Fourth Proportional to 6,456.78, 8,911.01 and 3,805.04

Step by Step Solution

1. Step 1: Write the proportion equation
   6,456.78 : 8,911.01 = 3,805.04 : x
2. Step 2: Convert to fraction form
   6,456.78/8,911.01 = 3,805.04/x
3. Step 3: Cross multiply
   6,456.78x = 8,911.01 × 3,805.04
4. Step 4: Simplify right side
   6,456.78x = 33,906,781.28
5. Step 5: Solve for x
   x = 33,906,781.28/6,456.78
6. Step 6: Final answer
   x = 5,251.35