Finding the Fourth Proportional to 10,158.67, 15,233.95 and 3,915.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,158.67 : 15,233.95 = 3,915.21 : x
2. Step 2: Convert to fraction form
   10,158.67/15,233.95 = 3,915.21/x
3. Step 3: Cross multiply
   10,158.67x = 15,233.95 × 3,915.21
4. Step 4: Simplify right side
   10,158.67x = 59,644,113.38
5. Step 5: Solve for x
   x = 59,644,113.38/10,158.67
6. Step 6: Final answer
   x = 5,871.25