Finding the Fourth Proportional to 9,022.57, 12,451.23 and 4,989.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,022.57 : 12,451.23 = 4,989.34 : x
2. Step 2: Convert to fraction form
   9,022.57/12,451.23 = 4,989.34/x
3. Step 3: Cross multiply
   9,022.57x = 12,451.23 × 4,989.34
4. Step 4: Simplify right side
   9,022.57x = 62,123,394.94
5. Step 5: Solve for x
   x = 62,123,394.94/9,022.57
6. Step 6: Final answer
   x = 6,885.34