Finding the Fourth Proportional to 8,579.82, 12,868.71 and 3,894.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,579.82 : 12,868.71 = 3,894.89 : x
2. Step 2: Convert to fraction form
   8,579.82/12,868.71 = 3,894.89/x
3. Step 3: Cross multiply
   8,579.82x = 12,868.71 × 3,894.89
4. Step 4: Simplify right side
   8,579.82x = 50,122,130.94
5. Step 5: Solve for x
   x = 50,122,130.94/8,579.82
6. Step 6: Final answer
   x = 5,841.86