Finding the Fourth Proportional to 11,413.89, 17,122.86 and 3,620.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,413.89 : 17,122.86 = 3,620.88 : x
2. Step 2: Convert to fraction form
   11,413.89/17,122.86 = 3,620.88/x
3. Step 3: Cross multiply
   11,413.89x = 17,122.86 × 3,620.88
4. Step 4: Simplify right side
   11,413.89x = 61,999,821.32
5. Step 5: Solve for x
   x = 61,999,821.32/11,413.89
6. Step 6: Final answer
   x = 5,431.96