Finding the Fourth Proportional to 8,089.83, 12,139.46 and 3,409.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,089.83 : 12,139.46 = 3,409.55 : x
2. Step 2: Convert to fraction form
   8,089.83/12,139.46 = 3,409.55/x
3. Step 3: Cross multiply
   8,089.83x = 12,139.46 × 3,409.55
4. Step 4: Simplify right side
   8,089.83x = 41,390,134.72
5. Step 5: Solve for x
   x = 41,390,134.72/8,089.83
6. Step 6: Final answer
   x = 5,116.32