Finding the Fourth Proportional to 22,419.35, 30,931.71 and 12,727.22

Step by Step Solution

1. Step 1: Write the proportion equation
   22,419.35 : 30,931.71 = 12,727.22 : x
2. Step 2: Convert to fraction form
   22,419.35/30,931.71 = 12,727.22/x
3. Step 3: Cross multiply
   22,419.35x = 30,931.71 × 12,727.22
4. Step 4: Simplify right side
   22,419.35x = 393,674,523.49
5. Step 5: Solve for x
   x = 393,674,523.49/22,419.35
6. Step 6: Final answer
   x = 17,559.59