Finding the Fourth Proportional to 22,909.82, 31,615.53 and 12,838.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,909.82 : 31,615.53 = 12,838.34 : x
2. Step 2: Convert to fraction form
   22,909.82/31,615.53 = 12,838.34/x
3. Step 3: Cross multiply
   22,909.82x = 31,615.53 × 12,838.34
4. Step 4: Simplify right side
   22,909.82x = 405,890,923.42
5. Step 5: Solve for x
   x = 405,890,923.42/22,909.82
6. Step 6: Final answer
   x = 17,716.90