Finding the Fourth Proportional to 11,443.68, 17,171.28 and 5,292

Step by Step Solution

1. Step 1: Write the proportion equation
   11,443.68 : 17,171.28 = 5,292 : x
2. Step 2: Convert to fraction form
   11,443.68/17,171.28 = 5,292/x
3. Step 3: Cross multiply
   11,443.68x = 17,171.28 × 5,292
4. Step 4: Simplify right side
   11,443.68x = 90,870,413.76
5. Step 5: Solve for x
   x = 90,870,413.76/11,443.68
6. Step 6: Final answer
   x = 7,940.66