Finding the Fourth Proportional to 18,392.72, 25,382.16 and 10,434.72

Step by Step Solution

1. Step 1: Write the proportion equation
   18,392.72 : 25,382.16 = 10,434.72 : x
2. Step 2: Convert to fraction form
   18,392.72/25,382.16 = 10,434.72/x
3. Step 3: Cross multiply
   18,392.72x = 25,382.16 × 10,434.72
4. Step 4: Simplify right side
   18,392.72x = 264,855,732.60
5. Step 5: Solve for x
   x = 264,855,732.60/18,392.72
6. Step 6: Final answer
   x = 14,400.03