Finding the Fourth Proportional to 10,215.18, 15,318.82 and 3,974.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,215.18 : 15,318.82 = 3,974.38 : x
2. Step 2: Convert to fraction form
   10,215.18/15,318.82 = 3,974.38/x
3. Step 3: Cross multiply
   10,215.18x = 15,318.82 × 3,974.38
4. Step 4: Simplify right side
   10,215.18x = 60,882,811.83
5. Step 5: Solve for x
   x = 60,882,811.83/10,215.18
6. Step 6: Final answer
   x = 5,960.03