Finding the Fourth Proportional to 3,311.36, 4,942.72 and 3,071

Step by Step Solution

1. Step 1: Write the proportion equation
   3,311.36 : 4,942.72 = 3,071 : x
2. Step 2: Convert to fraction form
   3,311.36/4,942.72 = 3,071/x
3. Step 3: Cross multiply
   3,311.36x = 4,942.72 × 3,071
4. Step 4: Simplify right side
   3,311.36x = 15,179,093.12
5. Step 5: Solve for x
   x = 15,179,093.12/3,311.36
6. Step 6: Final answer
   x = 4,583.95