Finding the Fourth Proportional to 8,863.89, 13,288.27 and 3,930.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,863.89 : 13,288.27 = 3,930.84 : x
2. Step 2: Convert to fraction form
   8,863.89/13,288.27 = 3,930.84/x
3. Step 3: Cross multiply
   8,863.89x = 13,288.27 × 3,930.84
4. Step 4: Simplify right side
   8,863.89x = 52,234,063.25
5. Step 5: Solve for x
   x = 52,234,063.25/8,863.89
6. Step 6: Final answer
   x = 5,892.91