Finding the Fourth Proportional to 9,022.74, 12,451.59 and 4,989.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,022.74 : 12,451.59 = 4,989.57 : x
2. Step 2: Convert to fraction form
   9,022.74/12,451.59 = 4,989.57/x
3. Step 3: Cross multiply
   9,022.74x = 12,451.59 × 4,989.57
4. Step 4: Simplify right side
   9,022.74x = 62,128,079.92
5. Step 5: Solve for x
   x = 62,128,079.92/9,022.74
6. Step 6: Final answer
   x = 6,885.72