Finding the Fourth Proportional to 11,519.30, 17,281.69 and 3,728.11

Step by Step Solution

1. Step 1: Write the proportion equation
   11,519.30 : 17,281.69 = 3,728.11 : x
2. Step 2: Convert to fraction form
   11,519.30/17,281.69 = 3,728.11/x
3. Step 3: Cross multiply
   11,519.30x = 17,281.69 × 3,728.11
4. Step 4: Simplify right side
   11,519.30x = 64,428,021.18
5. Step 5: Solve for x
   x = 64,428,021.18/11,519.30
6. Step 6: Final answer
   x = 5,593.05