Finding the Fourth Proportional to 13,078.31, 19,614.49 and 3,718.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,078.31 : 19,614.49 = 3,718.10 : x
2. Step 2: Convert to fraction form
   13,078.31/19,614.49 = 3,718.10/x
3. Step 3: Cross multiply
   13,078.31x = 19,614.49 × 3,718.10
4. Step 4: Simplify right side
   13,078.31x = 72,928,675.01
5. Step 5: Solve for x
   x = 72,928,675.01/13,078.31
6. Step 6: Final answer
   x = 5,576.31