Finding the Fourth Proportional to 9,022.81, 12,451.39 and 4,989.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,022.81 : 12,451.39 = 4,989.91 : x
2. Step 2: Convert to fraction form
   9,022.81/12,451.39 = 4,989.91/x
3. Step 3: Cross multiply
   9,022.81x = 12,451.39 × 4,989.91
4. Step 4: Simplify right side
   9,022.81x = 62,131,315.47
5. Step 5: Solve for x
   x = 62,131,315.47/9,022.81
6. Step 6: Final answer
   x = 6,886.03