Finding the Fourth Proportional to 18,443.69, 25,443.18 and 11,634.63

Step by Step Solution

1. Step 1: Write the proportion equation
   18,443.69 : 25,443.18 = 11,634.63 : x
2. Step 2: Convert to fraction form
   18,443.69/25,443.18 = 11,634.63/x
3. Step 3: Cross multiply
   18,443.69x = 25,443.18 × 11,634.63
4. Step 4: Simplify right side
   18,443.69x = 296,021,985.32
5. Step 5: Solve for x
   x = 296,021,985.32/18,443.69
6. Step 6: Final answer
   x = 16,050.04