Finding the Fourth Proportional to 8,091.82, 12,145.43 and 3,934.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,091.82 : 12,145.43 = 3,934.09 : x
2. Step 2: Convert to fraction form
   8,091.82/12,145.43 = 3,934.09/x
3. Step 3: Cross multiply
   8,091.82x = 12,145.43 × 3,934.09
4. Step 4: Simplify right side
   8,091.82x = 47,781,214.71
5. Step 5: Solve for x
   x = 47,781,214.71/8,091.82
6. Step 6: Final answer
   x = 5,904.88