Finding the Fourth Proportional to 18,142.86, 25,039.71 and 10,185.69

Step by Step Solution

1. Step 1: Write the proportion equation
   18,142.86 : 25,039.71 = 10,185.69 : x
2. Step 2: Convert to fraction form
   18,142.86/25,039.71 = 10,185.69/x
3. Step 3: Cross multiply
   18,142.86x = 25,039.71 × 10,185.69
4. Step 4: Simplify right side
   18,142.86x = 255,046,723.75
5. Step 5: Solve for x
   x = 255,046,723.75/18,142.86
6. Step 6: Final answer
   x = 14,057.69