Finding the Fourth Proportional to 11,571.27, 17,340.30 and 7,186.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,571.27 : 17,340.30 = 7,186.20 : x
2. Step 2: Convert to fraction form
   11,571.27/17,340.30 = 7,186.20/x
3. Step 3: Cross multiply
   11,571.27x = 17,340.30 × 7,186.20
4. Step 4: Simplify right side
   11,571.27x = 124,610,863.86
5. Step 5: Solve for x
   x = 124,610,863.86/11,571.27
6. Step 6: Final answer
   x = 10,768.99