Finding the Fourth Proportional to 18,404.30, 25,372.41 and 12,426.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,404.30 : 25,372.41 = 12,426.50 : x
2. Step 2: Convert to fraction form
   18,404.30/25,372.41 = 12,426.50/x
3. Step 3: Cross multiply
   18,404.30x = 25,372.41 × 12,426.50
4. Step 4: Simplify right side
   18,404.30x = 315,290,126.00
5. Step 5: Solve for x
   x = 315,290,126.00/18,404.30
6. Step 6: Final answer
   x = 17,131.33