Finding the Fourth Proportional to 18,189.30, 25,099.83 and 10,229.94

Step by Step Solution

1. Step 1: Write the proportion equation
   18,189.30 : 25,099.83 = 10,229.94 : x
2. Step 2: Convert to fraction form
   18,189.30/25,099.83 = 10,229.94/x
3. Step 3: Cross multiply
   18,189.30x = 25,099.83 × 10,229.94
4. Step 4: Simplify right side
   18,189.30x = 256,769,754.91
5. Step 5: Solve for x
   x = 256,769,754.91/18,189.30
6. Step 6: Final answer
   x = 14,116.53