Finding the Fourth Proportional to 8,384.46, 12,578.31 and 2,838.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,384.46 : 12,578.31 = 2,838.71 : x
2. Step 2: Convert to fraction form
   8,384.46/12,578.31 = 2,838.71/x
3. Step 3: Cross multiply
   8,384.46x = 12,578.31 × 2,838.71
4. Step 4: Simplify right side
   8,384.46x = 35,706,111.49
5. Step 5: Solve for x
   x = 35,706,111.49/8,384.46
6. Step 6: Final answer
   x = 4,258.61