Finding the Fourth Proportional to 6,478.67, 9,715.61 and 5,094.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,478.67 : 9,715.61 = 5,094.72 : x
2. Step 2: Convert to fraction form
   6,478.67/9,715.61 = 5,094.72/x
3. Step 3: Cross multiply
   6,478.67x = 9,715.61 × 5,094.72
4. Step 4: Simplify right side
   6,478.67x = 49,498,325.32
5. Step 5: Solve for x
   x = 49,498,325.32/6,478.67
6. Step 6: Final answer
   x = 7,640.20