Finding the Fourth Proportional to 22,582.21, 31,160.50 and 13,022.45

Step by Step Solution

1. Step 1: Write the proportion equation
   22,582.21 : 31,160.50 = 13,022.45 : x
2. Step 2: Convert to fraction form
   22,582.21/31,160.50 = 13,022.45/x
3. Step 3: Cross multiply
   22,582.21x = 31,160.50 × 13,022.45
4. Step 4: Simplify right side
   22,582.21x = 405,786,053.23
5. Step 5: Solve for x
   x = 405,786,053.23/22,582.21
6. Step 6: Final answer
   x = 17,969.28