Finding the Fourth Proportional to 6,474.72, 8,934.72 and 3,680

Step by Step Solution

1. Step 1: Write the proportion equation
   6,474.72 : 8,934.72 = 3,680 : x
2. Step 2: Convert to fraction form
   6,474.72/8,934.72 = 3,680/x
3. Step 3: Cross multiply
   6,474.72x = 8,934.72 × 3,680
4. Step 4: Simplify right side
   6,474.72x = 32,879,769.60
5. Step 5: Solve for x
   x = 32,879,769.60/6,474.72
6. Step 6: Final answer
   x = 5,078.18