Finding the Fourth Proportional to 18,644.56, 25,729.50 and 10,261

Step by Step Solution

1. Step 1: Write the proportion equation
   18,644.56 : 25,729.50 = 10,261 : x
2. Step 2: Convert to fraction form
   18,644.56/25,729.50 = 10,261/x
3. Step 3: Cross multiply
   18,644.56x = 25,729.50 × 10,261
4. Step 4: Simplify right side
   18,644.56x = 264,010,399.50
5. Step 5: Solve for x
   x = 264,010,399.50/18,644.56
6. Step 6: Final answer
   x = 14,160.18