Finding the Fourth Proportional to 8,499.27, 11,729.94 and 5,142.23

Step by Step Solution

1. Step 1: Write the proportion equation
   8,499.27 : 11,729.94 = 5,142.23 : x
2. Step 2: Convert to fraction form
   8,499.27/11,729.94 = 5,142.23/x
3. Step 3: Cross multiply
   8,499.27x = 11,729.94 × 5,142.23
4. Step 4: Simplify right side
   8,499.27x = 60,317,990.72
5. Step 5: Solve for x
   x = 60,317,990.72/8,499.27
6. Step 6: Final answer
   x = 7,096.84