Finding the Fourth Proportional to 18,219.72, 25,142.56 and 10,262.69

Step by Step Solution

1. Step 1: Write the proportion equation
   18,219.72 : 25,142.56 = 10,262.69 : x
2. Step 2: Convert to fraction form
   18,219.72/25,142.56 = 10,262.69/x
3. Step 3: Cross multiply
   18,219.72x = 25,142.56 × 10,262.69
4. Step 4: Simplify right side
   18,219.72x = 258,030,147.72
5. Step 5: Solve for x
   x = 258,030,147.72/18,219.72
6. Step 6: Final answer
   x = 14,162.14