Finding the Fourth Proportional to 3,915.57, 5,842.70 and 3,501.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,915.57 : 5,842.70 = 3,501.25 : x
2. Step 2: Convert to fraction form
   3,915.57/5,842.70 = 3,501.25/x
3. Step 3: Cross multiply
   3,915.57x = 5,842.70 × 3,501.25
4. Step 4: Simplify right side
   3,915.57x = 20,456,753.38
5. Step 5: Solve for x
   x = 20,456,753.38/3,915.57
6. Step 6: Final answer
   x = 5,224.46