Finding the Fourth Proportional to 8,083.42, 12,128.09 and 3,404.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,083.42 : 12,128.09 = 3,404.61 : x
2. Step 2: Convert to fraction form
   8,083.42/12,128.09 = 3,404.61/x
3. Step 3: Cross multiply
   8,083.42x = 12,128.09 × 3,404.61
4. Step 4: Simplify right side
   8,083.42x = 41,291,338.83
5. Step 5: Solve for x
   x = 41,291,338.83/8,083.42
6. Step 6: Final answer
   x = 5,108.16