Finding the Fourth Proportional to 9,760.70, 14,641.28 and 3,520.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,760.70 : 14,641.28 = 3,520.72 : x
2. Step 2: Convert to fraction form
   9,760.70/14,641.28 = 3,520.72/x
3. Step 3: Cross multiply
   9,760.70x = 14,641.28 × 3,520.72
4. Step 4: Simplify right side
   9,760.70x = 51,547,847.32
5. Step 5: Solve for x
   x = 51,547,847.32/9,760.70
6. Step 6: Final answer
   x = 5,281.16