Finding the Fourth Proportional to 11,399.28, 17,104.04 and 7,238.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,399.28 : 17,104.04 = 7,238.18 : x
2. Step 2: Convert to fraction form
   11,399.28/17,104.04 = 7,238.18/x
3. Step 3: Cross multiply
   11,399.28x = 17,104.04 × 7,238.18
4. Step 4: Simplify right side
   11,399.28x = 123,801,998.54
5. Step 5: Solve for x
   x = 123,801,998.54/11,399.28
6. Step 6: Final answer
   x = 10,860.51