Finding the Fourth Proportional to 22,771.89, 34,160.72 and 8,919.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,771.89 : 34,160.72 = 8,919.09 : x
2. Step 2: Convert to fraction form
   22,771.89/34,160.72 = 8,919.09/x
3. Step 3: Cross multiply
   22,771.89x = 34,160.72 × 8,919.09
4. Step 4: Simplify right side
   22,771.89x = 304,682,491.55
5. Step 5: Solve for x
   x = 304,682,491.55/22,771.89
6. Step 6: Final answer
   x = 13,379.76