Finding the Fourth Proportional to 11,628.20, 17,443.49 and 3,728.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,628.20 : 17,443.49 = 3,728.76 : x
2. Step 2: Convert to fraction form
   11,628.20/17,443.49 = 3,728.76/x
3. Step 3: Cross multiply
   11,628.20x = 17,443.49 × 3,728.76
4. Step 4: Simplify right side
   11,628.20x = 65,042,569.13
5. Step 5: Solve for x
   x = 65,042,569.13/11,628.20
6. Step 6: Final answer
   x = 5,593.52