Finding the Fourth Proportional to 11,390.69, 17,062.02 and 7,228.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,390.69 : 17,062.02 = 7,228.50 : x
2. Step 2: Convert to fraction form
   11,390.69/17,062.02 = 7,228.50/x
3. Step 3: Cross multiply
   11,390.69x = 17,062.02 × 7,228.50
4. Step 4: Simplify right side
   11,390.69x = 123,332,811.57
5. Step 5: Solve for x
   x = 123,332,811.57/11,390.69
6. Step 6: Final answer
   x = 10,827.51