Finding the Fourth Proportional to 10,717.55, 16,086.70 and 5,174.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,717.55 : 16,086.70 = 5,174.79 : x
2. Step 2: Convert to fraction form
   10,717.55/16,086.70 = 5,174.79/x
3. Step 3: Cross multiply
   10,717.55x = 16,086.70 × 5,174.79
4. Step 4: Simplify right side
   10,717.55x = 83,245,294.29
5. Step 5: Solve for x
   x = 83,245,294.29/10,717.55
6. Step 6: Final answer
   x = 7,767.19