Finding the Fourth Proportional to 6,654.87, 9,957.59 and 4,178.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,654.87 : 9,957.59 = 4,178.10 : x
2. Step 2: Convert to fraction form
   6,654.87/9,957.59 = 4,178.10/x
3. Step 3: Cross multiply
   6,654.87x = 9,957.59 × 4,178.10
4. Step 4: Simplify right side
   6,654.87x = 41,603,785.89
5. Step 5: Solve for x
   x = 41,603,785.89/6,654.87
6. Step 6: Final answer
   x = 6,251.63