Finding the Fourth Proportional to 13,046.20, 19,474.56 and 12,085

Step by Step Solution

1. Step 1: Write the proportion equation
   13,046.20 : 19,474.56 = 12,085 : x
2. Step 2: Convert to fraction form
   13,046.20/19,474.56 = 12,085/x
3. Step 3: Cross multiply
   13,046.20x = 19,474.56 × 12,085
4. Step 4: Simplify right side
   13,046.20x = 235,350,057.60
5. Step 5: Solve for x
   x = 235,350,057.60/13,046.20
6. Step 6: Final answer
   x = 18,039.74