Finding the Fourth Proportional to 8,093.28, 12,139.47 and 3,411.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,093.28 : 12,139.47 = 3,411.30 : x
2. Step 2: Convert to fraction form
   8,093.28/12,139.47 = 3,411.30/x
3. Step 3: Cross multiply
   8,093.28x = 12,139.47 × 3,411.30
4. Step 4: Simplify right side
   8,093.28x = 41,411,374.01
5. Step 5: Solve for x
   x = 41,411,374.01/8,093.28
6. Step 6: Final answer
   x = 5,116.76