Finding the Fourth Proportional to 13,409.38, 18,505.82 and 7,441.07

Step by Step Solution

1. Step 1: Write the proportion equation
   13,409.38 : 18,505.82 = 7,441.07 : x
2. Step 2: Convert to fraction form
   13,409.38/18,505.82 = 7,441.07/x
3. Step 3: Cross multiply
   13,409.38x = 18,505.82 × 7,441.07
4. Step 4: Simplify right side
   13,409.38x = 137,703,046.46
5. Step 5: Solve for x
   x = 137,703,046.46/13,409.38
6. Step 6: Final answer
   x = 10,269.16