Finding the Fourth Proportional to 10,872.36, 16,308.70 and 3,081.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,872.36 : 16,308.70 = 3,081.18 : x
2. Step 2: Convert to fraction form
   10,872.36/16,308.70 = 3,081.18/x
3. Step 3: Cross multiply
   10,872.36x = 16,308.70 × 3,081.18
4. Step 4: Simplify right side
   10,872.36x = 50,250,040.27
5. Step 5: Solve for x
   x = 50,250,040.27/10,872.36
6. Step 6: Final answer
   x = 4,621.82