Finding the Fourth Proportional to 11,808.50, 17,715.79 and 4,413.01

Step by Step Solution

1. Step 1: Write the proportion equation
   11,808.50 : 17,715.79 = 4,413.01 : x
2. Step 2: Convert to fraction form
   11,808.50/17,715.79 = 4,413.01/x
3. Step 3: Cross multiply
   11,808.50x = 17,715.79 × 4,413.01
4. Step 4: Simplify right side
   11,808.50x = 78,179,958.43
5. Step 5: Solve for x
   x = 78,179,958.43/11,808.50
6. Step 6: Final answer
   x = 6,620.65