Finding the Fourth Proportional to 10,782.72, 16,168.68 and 3,387.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,782.72 : 16,168.68 = 3,387.08 : x
2. Step 2: Convert to fraction form
   10,782.72/16,168.68 = 3,387.08/x
3. Step 3: Cross multiply
   10,782.72x = 16,168.68 × 3,387.08
4. Step 4: Simplify right side
   10,782.72x = 54,764,653.08
5. Step 5: Solve for x
   x = 54,764,653.08/10,782.72
6. Step 6: Final answer
   x = 5,078.93