Finding the Fourth Proportional to 9,640.80, 14,454.72 and 3,794.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,640.80 : 14,454.72 = 3,794.40 : x
2. Step 2: Convert to fraction form
   9,640.80/14,454.72 = 3,794.40/x
3. Step 3: Cross multiply
   9,640.80x = 14,454.72 × 3,794.40
4. Step 4: Simplify right side
   9,640.80x = 54,846,989.57
5. Step 5: Solve for x
   x = 54,846,989.57/9,640.80
6. Step 6: Final answer
   x = 5,689.05