Finding the Fourth Proportional to 11,386.27, 17,055.41 and 7,224.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,386.27 : 17,055.41 = 7,224.09 : x
2. Step 2: Convert to fraction form
   11,386.27/17,055.41 = 7,224.09/x
3. Step 3: Cross multiply
   11,386.27x = 17,055.41 × 7,224.09
4. Step 4: Simplify right side
   11,386.27x = 123,209,716.75
5. Step 5: Solve for x
   x = 123,209,716.75/11,386.27
6. Step 6: Final answer
   x = 10,820.90