Finding the Fourth Proportional to 10,287.82, 14,197.20 and 5,572.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.82 : 14,197.20 = 5,572.09 : x
2. Step 2: Convert to fraction form
   10,287.82/14,197.20 = 5,572.09/x
3. Step 3: Cross multiply
   10,287.82x = 14,197.20 × 5,572.09
4. Step 4: Simplify right side
   10,287.82x = 79,108,076.15
5. Step 5: Solve for x
   x = 79,108,076.15/10,287.82
6. Step 6: Final answer
   x = 7,689.49