Finding the Fourth Proportional to 20,874.90, 31,315.59 and 7,022.82

Step by Step Solution

1. Step 1: Write the proportion equation
   20,874.90 : 31,315.59 = 7,022.82 : x
2. Step 2: Convert to fraction form
   20,874.90/31,315.59 = 7,022.82/x
3. Step 3: Cross multiply
   20,874.90x = 31,315.59 × 7,022.82
4. Step 4: Simplify right side
   20,874.90x = 219,923,751.76
5. Step 5: Solve for x
   x = 219,923,751.76/20,874.90
6. Step 6: Final answer
   x = 10,535.32