Finding the Fourth Proportional to 6,363.78, 8,775.96 and 4,871.76

Step by Step Solution

1. Step 1: Write the proportion equation
   6,363.78 : 8,775.96 = 4,871.76 : x
2. Step 2: Convert to fraction form
   6,363.78/8,775.96 = 4,871.76/x
3. Step 3: Cross multiply
   6,363.78x = 8,775.96 × 4,871.76
4. Step 4: Simplify right side
   6,363.78x = 42,754,370.89
5. Step 5: Solve for x
   x = 42,754,370.89/6,363.78
6. Step 6: Final answer
   x = 6,718.39