Finding the Fourth Proportional to 18,109.31, 24,989.60 and 10,043.39

Step by Step Solution

1. Step 1: Write the proportion equation
   18,109.31 : 24,989.60 = 10,043.39 : x
2. Step 2: Convert to fraction form
   18,109.31/24,989.60 = 10,043.39/x
3. Step 3: Cross multiply
   18,109.31x = 24,989.60 × 10,043.39
4. Step 4: Simplify right side
   18,109.31x = 250,980,123.58
5. Step 5: Solve for x
   x = 250,980,123.58/18,109.31
6. Step 6: Final answer
   x = 13,859.18