Finding the Fourth Proportional to 10,872.38, 16,308.73 and 3,081.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,872.38 : 16,308.73 = 3,081.20 : x
2. Step 2: Convert to fraction form
   10,872.38/16,308.73 = 3,081.20/x
3. Step 3: Cross multiply
   10,872.38x = 16,308.73 × 3,081.20
4. Step 4: Simplify right side
   10,872.38x = 50,250,361.93
5. Step 5: Solve for x
   x = 50,250,361.93/10,872.38
6. Step 6: Final answer
   x = 4,621.84