Finding the Fourth Proportional to 5,422.82, 8,136.96 and 2,138.27

Step by Step Solution

1. Step 1: Write the proportion equation
   5,422.82 : 8,136.96 = 2,138.27 : x
2. Step 2: Convert to fraction form
   5,422.82/8,136.96 = 2,138.27/x
3. Step 3: Cross multiply
   5,422.82x = 8,136.96 × 2,138.27
4. Step 4: Simplify right side
   5,422.82x = 17,399,017.46
5. Step 5: Solve for x
   x = 17,399,017.46/5,422.82
6. Step 6: Final answer
   x = 3,208.48