Finding the Fourth Proportional to 22,524.21, 31,083.42 and 12,315.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,524.21 : 31,083.42 = 12,315.30 : x
2. Step 2: Convert to fraction form
   22,524.21/31,083.42 = 12,315.30/x
3. Step 3: Cross multiply
   22,524.21x = 31,083.42 × 12,315.30
4. Step 4: Simplify right side
   22,524.21x = 382,801,642.33
5. Step 5: Solve for x
   x = 382,801,642.33/22,524.21
6. Step 6: Final answer
   x = 16,995.12