Finding the Fourth Proportional to 9,880.32, 14,826.24 and 3,644.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,880.32 : 14,826.24 = 3,644.72 : x
2. Step 2: Convert to fraction form
   9,880.32/14,826.24 = 3,644.72/x
3. Step 3: Cross multiply
   9,880.32x = 14,826.24 × 3,644.72
4. Step 4: Simplify right side
   9,880.32x = 54,037,493.45
5. Step 5: Solve for x
   x = 54,037,493.45/9,880.32
6. Step 6: Final answer
   x = 5,469.20