Finding the Fourth Proportional to 11,168.88, 15,413.40 and 7,635.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,168.88 : 15,413.40 = 7,635.12 : x
2. Step 2: Convert to fraction form
   11,168.88/15,413.40 = 7,635.12/x
3. Step 3: Cross multiply
   11,168.88x = 15,413.40 × 7,635.12
4. Step 4: Simplify right side
   11,168.88x = 117,683,158.61
5. Step 5: Solve for x
   x = 117,683,158.61/11,168.88
6. Step 6: Final answer
   x = 10,536.70