Finding the Fourth Proportional to 12,022.80, 17,989.83 and 7,281.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,022.80 : 17,989.83 = 7,281.69 : x
2. Step 2: Convert to fraction form
   12,022.80/17,989.83 = 7,281.69/x
3. Step 3: Cross multiply
   12,022.80x = 17,989.83 × 7,281.69
4. Step 4: Simplify right side
   12,022.80x = 130,996,365.21
5. Step 5: Solve for x
   x = 130,996,365.21/12,022.80
6. Step 6: Final answer
   x = 10,895.66