Finding the Fourth Proportional to 11,413.31, 17,111.66 and 7,706.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,413.31 : 17,111.66 = 7,706.34 : x
2. Step 2: Convert to fraction form
   11,413.31/17,111.66 = 7,706.34/x
3. Step 3: Cross multiply
   11,413.31x = 17,111.66 × 7,706.34
4. Step 4: Simplify right side
   11,413.31x = 131,868,231.39
5. Step 5: Solve for x
   x = 131,868,231.39/11,413.31
6. Step 6: Final answer
   x = 11,553.90