Finding the Fourth Proportional to 3,938.49, 5,915.16 and 3,613.41

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938.49 : 5,915.16 = 3,613.41 : x
2. Step 2: Convert to fraction form
   3,938.49/5,915.16 = 3,613.41/x
3. Step 3: Cross multiply
   3,938.49x = 5,915.16 × 3,613.41
4. Step 4: Simplify right side
   3,938.49x = 21,373,898.30
5. Step 5: Solve for x
   x = 21,373,898.30/3,938.49
6. Step 6: Final answer
   x = 5,426.93