Finding the Fourth Proportional to 3,936.38, 5,407.90 and 3,522.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,936.38 : 5,407.90 = 3,522.22 : x
2. Step 2: Convert to fraction form
   3,936.38/5,407.90 = 3,522.22/x
3. Step 3: Cross multiply
   3,936.38x = 5,407.90 × 3,522.22
4. Step 4: Simplify right side
   3,936.38x = 19,047,813.54
5. Step 5: Solve for x
   x = 19,047,813.54/3,936.38
6. Step 6: Final answer
   x = 4,838.92