Finding the Fourth Proportional to 11,744.28, 16,216.20 and 7,770.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,744.28 : 16,216.20 = 7,770.96 : x
2. Step 2: Convert to fraction form
   11,744.28/16,216.20 = 7,770.96/x
3. Step 3: Cross multiply
   11,744.28x = 16,216.20 × 7,770.96
4. Step 4: Simplify right side
   11,744.28x = 126,015,441.55
5. Step 5: Solve for x
   x = 126,015,441.55/11,744.28
6. Step 6: Final answer
   x = 10,729.94