Finding the Fourth Proportional to 10,851.37, 16,255.49 and 5,288.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,851.37 : 16,255.49 = 5,288.49 : x
2. Step 2: Convert to fraction form
   10,851.37/16,255.49 = 5,288.49/x
3. Step 3: Cross multiply
   10,851.37x = 16,255.49 × 5,288.49
4. Step 4: Simplify right side
   10,851.37x = 85,966,969.87
5. Step 5: Solve for x
   x = 85,966,969.87/10,851.37
6. Step 6: Final answer
   x = 7,922.22