Finding the Fourth Proportional to 18,514.50, 25,550.01 and 10,131

Step by Step Solution

1. Step 1: Write the proportion equation
   18,514.50 : 25,550.01 = 10,131 : x
2. Step 2: Convert to fraction form
   18,514.50/25,550.01 = 10,131/x
3. Step 3: Cross multiply
   18,514.50x = 25,550.01 × 10,131
4. Step 4: Simplify right side
   18,514.50x = 258,847,151.31
5. Step 5: Solve for x
   x = 258,847,151.31/18,514.50
6. Step 6: Final answer
   x = 13,980.78