Finding the Fourth Proportional to 13,402.30, 18,494.42 and 7,433.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,402.30 : 18,494.42 = 7,433.54 : x
2. Step 2: Convert to fraction form
   13,402.30/18,494.42 = 7,433.54/x
3. Step 3: Cross multiply
   13,402.30x = 18,494.42 × 7,433.54
4. Step 4: Simplify right side
   13,402.30x = 137,479,010.85
5. Step 5: Solve for x
   x = 137,479,010.85/13,402.30
6. Step 6: Final answer
   x = 10,257.87