Finding the Fourth Proportional to 12,046.28, 18,078.29 and 5,721.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,046.28 : 18,078.29 = 5,721.18 : x
2. Step 2: Convert to fraction form
   12,046.28/18,078.29 = 5,721.18/x
3. Step 3: Cross multiply
   12,046.28x = 18,078.29 × 5,721.18
4. Step 4: Simplify right side
   12,046.28x = 103,429,076.24
5. Step 5: Solve for x
   x = 103,429,076.24/12,046.28
6. Step 6: Final answer
   x = 8,585.98