Finding the Fourth Proportional to 18,536.50, 25,581.59 and 10,153

Step by Step Solution

1. Step 1: Write the proportion equation
   18,536.50 : 25,581.59 = 10,153 : x
2. Step 2: Convert to fraction form
   18,536.50/25,581.59 = 10,153/x
3. Step 3: Cross multiply
   18,536.50x = 25,581.59 × 10,153
4. Step 4: Simplify right side
   18,536.50x = 259,729,883.27
5. Step 5: Solve for x
   x = 259,729,883.27/18,536.50
6. Step 6: Final answer
   x = 14,011.81