Finding the Fourth Proportional to 8,974.82, 12,379.74 and 5,786.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,974.82 : 12,379.74 = 5,786.94 : x
2. Step 2: Convert to fraction form
   8,974.82/12,379.74 = 5,786.94/x
3. Step 3: Cross multiply
   8,974.82x = 12,379.74 × 5,786.94
4. Step 4: Simplify right side
   8,974.82x = 71,640,812.60
5. Step 5: Solve for x
   x = 71,640,812.60/8,974.82
6. Step 6: Final answer
   x = 7,982.42