Finding the Fourth Proportional to 10,287.18, 14,196.36 and 5,571.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.18 : 14,196.36 = 5,571.42 : x
2. Step 2: Convert to fraction form
   10,287.18/14,196.36 = 5,571.42/x
3. Step 3: Cross multiply
   10,287.18x = 14,196.36 × 5,571.42
4. Step 4: Simplify right side
   10,287.18x = 79,093,884.03
5. Step 5: Solve for x
   x = 79,093,884.03/10,287.18
6. Step 6: Final answer
   x = 7,688.59