Finding the Fourth Proportional to 8,722.52, 13,089.52 and 4,105.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,722.52 : 13,089.52 = 4,105.88 : x
2. Step 2: Convert to fraction form
   8,722.52/13,089.52 = 4,105.88/x
3. Step 3: Cross multiply
   8,722.52x = 13,089.52 × 4,105.88
4. Step 4: Simplify right side
   8,722.52x = 53,743,998.38
5. Step 5: Solve for x
   x = 53,743,998.38/8,722.52
6. Step 6: Final answer
   x = 6,161.52