Finding the Fourth Proportional to 12,798.27, 19,165.34 and 8,104.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,798.27 : 19,165.34 = 8,104.12 : x
2. Step 2: Convert to fraction form
   12,798.27/19,165.34 = 8,104.12/x
3. Step 3: Cross multiply
   12,798.27x = 19,165.34 × 8,104.12
4. Step 4: Simplify right side
   12,798.27x = 155,318,187.55
5. Step 5: Solve for x
   x = 155,318,187.55/12,798.27
6. Step 6: Final answer
   x = 12,135.87