Finding the Fourth Proportional to 18,105.82, 24,985.59 and 10,039.43

Step by Step Solution

1. Step 1: Write the proportion equation
   18,105.82 : 24,985.59 = 10,039.43 : x
2. Step 2: Convert to fraction form
   18,105.82/24,985.59 = 10,039.43/x
3. Step 3: Cross multiply
   18,105.82x = 24,985.59 × 10,039.43
4. Step 4: Simplify right side
   18,105.82x = 250,841,081.81
5. Step 5: Solve for x
   x = 250,841,081.81/18,105.82
6. Step 6: Final answer
   x = 13,854.17