Finding the Fourth Proportional to 4,978.55, 6,870.35 and 2,963.33

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.55 : 6,870.35 = 2,963.33 : x
2. Step 2: Convert to fraction form
   4,978.55/6,870.35 = 2,963.33/x
3. Step 3: Cross multiply
   4,978.55x = 6,870.35 × 2,963.33
4. Step 4: Simplify right side
   4,978.55x = 20,359,151.73
5. Step 5: Solve for x
   x = 20,359,151.73/4,978.55
6. Step 6: Final answer
   x = 4,089.38