Finding the Fourth Proportional to 22,789.43, 31,459.01 and 13,839.81

Step by Step Solution

1. Step 1: Write the proportion equation
   22,789.43 : 31,459.01 = 13,839.81 : x
2. Step 2: Convert to fraction form
   22,789.43/31,459.01 = 13,839.81/x
3. Step 3: Cross multiply
   22,789.43x = 31,459.01 × 13,839.81
4. Step 4: Simplify right side
   22,789.43x = 435,386,651.99
5. Step 5: Solve for x
   x = 435,386,651.99/22,789.43
6. Step 6: Final answer
   x = 19,104.77