Finding the Fourth Proportional to 8,722.72, 13,089.63 and 3,175.53

Step by Step Solution

1. Step 1: Write the proportion equation
   8,722.72 : 13,089.63 = 3,175.53 : x
2. Step 2: Convert to fraction form
   8,722.72/13,089.63 = 3,175.53/x
3. Step 3: Cross multiply
   8,722.72x = 13,089.63 × 3,175.53
4. Step 4: Simplify right side
   8,722.72x = 41,566,447.31
5. Step 5: Solve for x
   x = 41,566,447.31/8,722.72
6. Step 6: Final answer
   x = 4,765.31