Finding the Fourth Proportional to 13,393.38, 18,481.61 and 7,424.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,393.38 : 18,481.61 = 7,424.54 : x
2. Step 2: Convert to fraction form
   13,393.38/18,481.61 = 7,424.54/x
3. Step 3: Cross multiply
   13,393.38x = 18,481.61 × 7,424.54
4. Step 4: Simplify right side
   13,393.38x = 137,217,517.47
5. Step 5: Solve for x
   x = 137,217,517.47/13,393.38
6. Step 6: Final answer
   x = 10,245.17