Finding the Fourth Proportional to 22,524.96, 31,086.77 and 12,965.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,524.96 : 31,086.77 = 12,965.21 : x
2. Step 2: Convert to fraction form
   22,524.96/31,086.77 = 12,965.21/x
3. Step 3: Cross multiply
   22,524.96x = 31,086.77 × 12,965.21
4. Step 4: Simplify right side
   22,524.96x = 403,046,281.01
5. Step 5: Solve for x
   x = 403,046,281.01/22,524.96
6. Step 6: Final answer
   x = 17,893.32