Finding the Fourth Proportional to 8,771.72, 12,105.78 and 5,045

Step by Step Solution

1. Step 1: Write the proportion equation
   8,771.72 : 12,105.78 = 5,045 : x
2. Step 2: Convert to fraction form
   8,771.72/12,105.78 = 5,045/x
3. Step 3: Cross multiply
   8,771.72x = 12,105.78 × 5,045
4. Step 4: Simplify right side
   8,771.72x = 61,073,660.10
5. Step 5: Solve for x
   x = 61,073,660.10/8,771.72
6. Step 6: Final answer
   x = 6,962.56