Finding the Fourth Proportional to 8,087.90, 12,134.79 and 3,409.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,087.90 : 12,134.79 = 3,409.08 : x
2. Step 2: Convert to fraction form
   8,087.90/12,134.79 = 3,409.08/x
3. Step 3: Cross multiply
   8,087.90x = 12,134.79 × 3,409.08
4. Step 4: Simplify right side
   8,087.90x = 41,368,469.89
5. Step 5: Solve for x
   x = 41,368,469.89/8,087.90
6. Step 6: Final answer
   x = 5,114.86