Finding the Fourth Proportional to 10,715.40, 16,077.33 and 3,320.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,715.40 : 16,077.33 = 3,320.43 : x
2. Step 2: Convert to fraction form
   10,715.40/16,077.33 = 3,320.43/x
3. Step 3: Cross multiply
   10,715.40x = 16,077.33 × 3,320.43
4. Step 4: Simplify right side
   10,715.40x = 53,383,648.85
5. Step 5: Solve for x
   x = 53,383,648.85/10,715.40
6. Step 6: Final answer
   x = 4,981.96