Finding the Fourth Proportional to 7,020.27, 9,689.49 and 4,787.47

Step by Step Solution

1. Step 1: Write the proportion equation
   7,020.27 : 9,689.49 = 4,787.47 : x
2. Step 2: Convert to fraction form
   7,020.27/9,689.49 = 4,787.47/x
3. Step 3: Cross multiply
   7,020.27x = 9,689.49 × 4,787.47
4. Step 4: Simplify right side
   7,020.27x = 46,388,142.69
5. Step 5: Solve for x
   x = 46,388,142.69/7,020.27
6. Step 6: Final answer
   x = 6,607.74