Finding the Fourth Proportional to 11,893.81, 16,413.57 and 7,177.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,893.81 : 16,413.57 = 7,177.18 : x
2. Step 2: Convert to fraction form
   11,893.81/16,413.57 = 7,177.18/x
3. Step 3: Cross multiply
   11,893.81x = 16,413.57 × 7,177.18
4. Step 4: Simplify right side
   11,893.81x = 117,803,146.33
5. Step 5: Solve for x
   x = 117,803,146.33/11,893.81
6. Step 6: Final answer
   x = 9,904.58