Finding the Fourth Proportional to 8,271.31, 12,396.53 and 3,338.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,271.31 : 12,396.53 = 3,338.20 : x
2. Step 2: Convert to fraction form
   8,271.31/12,396.53 = 3,338.20/x
3. Step 3: Cross multiply
   8,271.31x = 12,396.53 × 3,338.20
4. Step 4: Simplify right side
   8,271.31x = 41,382,079.76
5. Step 5: Solve for x
   x = 41,382,079.76/8,271.31
6. Step 6: Final answer
   x = 5,003.09