Finding the Fourth Proportional to 8,940.56, 12,336.92 and 4,960.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,940.56 : 12,336.92 = 4,960.72 : x
2. Step 2: Convert to fraction form
   8,940.56/12,336.92 = 4,960.72/x
3. Step 3: Cross multiply
   8,940.56x = 12,336.92 × 4,960.72
4. Step 4: Simplify right side
   8,940.56x = 61,200,005.78
5. Step 5: Solve for x
   x = 61,200,005.78/8,940.56
6. Step 6: Final answer
   x = 6,845.21