Finding the Fourth Proportional to 7,078.08, 10,615.30 and 2,919.27

Step by Step Solution

1. Step 1: Write the proportion equation
   7,078.08 : 10,615.30 = 2,919.27 : x
2. Step 2: Convert to fraction form
   7,078.08/10,615.30 = 2,919.27/x
3. Step 3: Cross multiply
   7,078.08x = 10,615.30 × 2,919.27
4. Step 4: Simplify right side
   7,078.08x = 30,988,926.83
5. Step 5: Solve for x
   x = 30,988,926.83/7,078.08
6. Step 6: Final answer
   x = 4,378.15