Finding the Fourth Proportional to 13,078.28, 19,614.46 and 3,718.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,078.28 : 19,614.46 = 3,718.09 : x
2. Step 2: Convert to fraction form
   13,078.28/19,614.46 = 3,718.09/x
3. Step 3: Cross multiply
   13,078.28x = 19,614.46 × 3,718.09
4. Step 4: Simplify right side
   13,078.28x = 72,928,269.25
5. Step 5: Solve for x
   x = 72,928,269.25/13,078.28
6. Step 6: Final answer
   x = 5,576.29