Finding the Fourth Proportional to 18,172.50, 25,081.50 and 10,214.72

Step by Step Solution

1. Step 1: Write the proportion equation
   18,172.50 : 25,081.50 = 10,214.72 : x
2. Step 2: Convert to fraction form
   18,172.50/25,081.50 = 10,214.72/x
3. Step 3: Cross multiply
   18,172.50x = 25,081.50 × 10,214.72
4. Step 4: Simplify right side
   18,172.50x = 256,200,499.68
5. Step 5: Solve for x
   x = 256,200,499.68/18,172.50
6. Step 6: Final answer
   x = 14,098.25