Finding the Fourth Proportional to 3,938.76, 5,890.50 and 3,502.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938.76 : 5,890.50 = 3,502.72 : x
2. Step 2: Convert to fraction form
   3,938.76/5,890.50 = 3,502.72/x
3. Step 3: Cross multiply
   3,938.76x = 5,890.50 × 3,502.72
4. Step 4: Simplify right side
   3,938.76x = 20,632,772.16
5. Step 5: Solve for x
   x = 20,632,772.16/3,938.76
6. Step 6: Final answer
   x = 5,238.39