Finding the Fourth Proportional to 8,648.72, 11,933.67 and 5,618.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,648.72 : 11,933.67 = 5,618.09 : x
2. Step 2: Convert to fraction form
   8,648.72/11,933.67 = 5,618.09/x
3. Step 3: Cross multiply
   8,648.72x = 11,933.67 × 5,618.09
4. Step 4: Simplify right side
   8,648.72x = 67,044,432.09
5. Step 5: Solve for x
   x = 67,044,432.09/8,648.72
6. Step 6: Final answer
   x = 7,751.95