Finding the Fourth Proportional to 3,938.36, 5,889.78 and 3,502.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938.36 : 5,889.78 = 3,502.17 : x
2. Step 2: Convert to fraction form
   3,938.36/5,889.78 = 3,502.17/x
3. Step 3: Cross multiply
   3,938.36x = 5,889.78 × 3,502.17
4. Step 4: Simplify right side
   3,938.36x = 20,627,010.82
5. Step 5: Solve for x
   x = 20,627,010.82/3,938.36
6. Step 6: Final answer
   x = 5,237.47