Finding the Fourth Proportional to 13,078.40, 19,616.46 and 3,718.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,078.40 : 19,616.46 = 3,718.04 : x
2. Step 2: Convert to fraction form
   13,078.40/19,616.46 = 3,718.04/x
3. Step 3: Cross multiply
   13,078.40x = 19,616.46 × 3,718.04
4. Step 4: Simplify right side
   13,078.40x = 72,934,782.94
5. Step 5: Solve for x
   x = 72,934,782.94/13,078.40
6. Step 6: Final answer
   x = 5,576.74