Finding the Fourth Proportional to 14,404.43, 21,610.94 and 7,389.40

Step by Step Solution

1. Step 1: Write the proportion equation
   14,404.43 : 21,610.94 = 7,389.40 : x
2. Step 2: Convert to fraction form
   14,404.43/21,610.94 = 7,389.40/x
3. Step 3: Cross multiply
   14,404.43x = 21,610.94 × 7,389.40
4. Step 4: Simplify right side
   14,404.43x = 159,691,921.54
5. Step 5: Solve for x
   x = 159,691,921.54/14,404.43
6. Step 6: Final answer
   x = 11,086.30