Finding the Fourth Proportional to 10,287.16, 14,196.28 and 5,571.44

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.16 : 14,196.28 = 5,571.44 : x
2. Step 2: Convert to fraction form
   10,287.16/14,196.28 = 5,571.44/x
3. Step 3: Cross multiply
   10,287.16x = 14,196.28 × 5,571.44
4. Step 4: Simplify right side
   10,287.16x = 79,093,722.24
5. Step 5: Solve for x
   x = 79,093,722.24/10,287.16
6. Step 6: Final answer
   x = 7,688.59