Finding the Fourth Proportional to 6,356.78, 8,772.42 and 3,705.80

Step by Step Solution

1. Step 1: Write the proportion equation
   6,356.78 : 8,772.42 = 3,705.80 : x
2. Step 2: Convert to fraction form
   6,356.78/8,772.42 = 3,705.80/x
3. Step 3: Cross multiply
   6,356.78x = 8,772.42 × 3,705.80
4. Step 4: Simplify right side
   6,356.78x = 32,508,834.04
5. Step 5: Solve for x
   x = 32,508,834.04/6,356.78
6. Step 6: Final answer
   x = 5,114.04