Finding the Fourth Proportional to 5,902.68, 8,142.85 and 3,667.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,902.68 : 8,142.85 = 3,667.15 : x
2. Step 2: Convert to fraction form
   5,902.68/8,142.85 = 3,667.15/x
3. Step 3: Cross multiply
   5,902.68x = 8,142.85 × 3,667.15
4. Step 4: Simplify right side
   5,902.68x = 29,861,052.38
5. Step 5: Solve for x
   x = 29,861,052.38/5,902.68
6. Step 6: Final answer
   x = 5,058.90