Finding the Fourth Proportional to 8,091.63, 12,136.42 and 3,413.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,091.63 : 12,136.42 = 3,413.50 : x
2. Step 2: Convert to fraction form
   8,091.63/12,136.42 = 3,413.50/x
3. Step 3: Cross multiply
   8,091.63x = 12,136.42 × 3,413.50
4. Step 4: Simplify right side
   8,091.63x = 41,427,624.39
5. Step 5: Solve for x
   x = 41,427,624.39/8,091.63
6. Step 6: Final answer
   x = 5,119.81