Finding the Fourth Proportional to 8,630.30, 11,906.78 and 5,647.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,630.30 : 11,906.78 = 5,647.88 : x
2. Step 2: Convert to fraction form
   8,630.30/11,906.78 = 5,647.88/x
3. Step 3: Cross multiply
   8,630.30x = 11,906.78 × 5,647.88
4. Step 4: Simplify right side
   8,630.30x = 67,247,976.85
5. Step 5: Solve for x
   x = 67,247,976.85/8,630.30
6. Step 6: Final answer
   x = 7,792.08