Finding the Fourth Proportional to 8,172.72, 12,259.46 and 2,329.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,172.72 : 12,259.46 = 2,329.72 : x
2. Step 2: Convert to fraction form
   8,172.72/12,259.46 = 2,329.72/x
3. Step 3: Cross multiply
   8,172.72x = 12,259.46 × 2,329.72
4. Step 4: Simplify right side
   8,172.72x = 28,561,109.15
5. Step 5: Solve for x
   x = 28,561,109.15/8,172.72
6. Step 6: Final answer
   x = 3,494.69