Finding the Fourth Proportional to 12,145.30, 16,757.54 and 8,104.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,145.30 : 16,757.54 = 8,104.18 : x
2. Step 2: Convert to fraction form
   12,145.30/16,757.54 = 8,104.18/x
3. Step 3: Cross multiply
   12,145.30x = 16,757.54 × 8,104.18
4. Step 4: Simplify right side
   12,145.30x = 135,806,120.52
5. Step 5: Solve for x
   x = 135,806,120.52/12,145.30
6. Step 6: Final answer
   x = 11,181.78