Finding the Fourth Proportional to 11,160.96, 16,757.82 and 5,321.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,160.96 : 16,757.82 = 5,321.76 : x
2. Step 2: Convert to fraction form
   11,160.96/16,757.82 = 5,321.76/x
3. Step 3: Cross multiply
   11,160.96x = 16,757.82 × 5,321.76
4. Step 4: Simplify right side
   11,160.96x = 89,181,096.16
5. Step 5: Solve for x
   x = 89,181,096.16/11,160.96
6. Step 6: Final answer
   x = 7,990.45