Finding the Fourth Proportional to 9,880.28, 14,826.24 and 3,644.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,880.28 : 14,826.24 = 3,644.68 : x
2. Step 2: Convert to fraction form
   9,880.28/14,826.24 = 3,644.68/x
3. Step 3: Cross multiply
   9,880.28x = 14,826.24 × 3,644.68
4. Step 4: Simplify right side
   9,880.28x = 54,036,900.40
5. Step 5: Solve for x
   x = 54,036,900.40/9,880.28
6. Step 6: Final answer
   x = 5,469.17