Finding the Fourth Proportional to 6,494.56, 8,963.16 and 3,978.36

Step by Step Solution

1. Step 1: Write the proportion equation
   6,494.56 : 8,963.16 = 3,978.36 : x
2. Step 2: Convert to fraction form
   6,494.56/8,963.16 = 3,978.36/x
3. Step 3: Cross multiply
   6,494.56x = 8,963.16 × 3,978.36
4. Step 4: Simplify right side
   6,494.56x = 35,658,677.22
5. Step 5: Solve for x
   x = 35,658,677.22/6,494.56
6. Step 6: Final answer
   x = 5,490.55