Finding the Fourth Proportional to 18,605.37, 25,675.31 and 10,221.69

Step by Step Solution

1. Step 1: Write the proportion equation
   18,605.37 : 25,675.31 = 10,221.69 : x
2. Step 2: Convert to fraction form
   18,605.37/25,675.31 = 10,221.69/x
3. Step 3: Cross multiply
   18,605.37x = 25,675.31 × 10,221.69
4. Step 4: Simplify right side
   18,605.37x = 262,445,008.37
5. Step 5: Solve for x
   x = 262,445,008.37/18,605.37
6. Step 6: Final answer
   x = 14,105.87