Finding the Fourth Proportional to 22,582.82, 31,170.79 and 13,628.81

Step by Step Solution

1. Step 1: Write the proportion equation
   22,582.82 : 31,170.79 = 13,628.81 : x
2. Step 2: Convert to fraction form
   22,582.82/31,170.79 = 13,628.81/x
3. Step 3: Cross multiply
   22,582.82x = 31,170.79 × 13,628.81
4. Step 4: Simplify right side
   22,582.82x = 424,820,869.42
5. Step 5: Solve for x
   x = 424,820,869.42/22,582.82
6. Step 6: Final answer
   x = 18,811.68