Finding the Fourth Proportional to 10,872.88, 16,309.47 and 3,081.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,872.88 : 16,309.47 = 3,081.69 : x
2. Step 2: Convert to fraction form
   10,872.88/16,309.47 = 3,081.69/x
3. Step 3: Cross multiply
   10,872.88x = 16,309.47 × 3,081.69
4. Step 4: Simplify right side
   10,872.88x = 50,260,730.60
5. Step 5: Solve for x
   x = 50,260,730.60/10,872.88
6. Step 6: Final answer
   x = 4,622.58