Finding the Fourth Proportional to 12,673.10, 19,012.71 and 3,908.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,673.10 : 19,012.71 = 3,908.18 : x
2. Step 2: Convert to fraction form
   12,673.10/19,012.71 = 3,908.18/x
3. Step 3: Cross multiply
   12,673.10x = 19,012.71 × 3,908.18
4. Step 4: Simplify right side
   12,673.10x = 74,305,092.97
5. Step 5: Solve for x
   x = 74,305,092.97/12,673.10
6. Step 6: Final answer
   x = 5,863.21