Finding the Fourth Proportional to 22,377.79, 30,883.71 and 12,818.44

Step by Step Solution

1. Step 1: Write the proportion equation
   22,377.79 : 30,883.71 = 12,818.44 : x
2. Step 2: Convert to fraction form
   22,377.79/30,883.71 = 12,818.44/x
3. Step 3: Cross multiply
   22,377.79x = 30,883.71 × 12,818.44
4. Step 4: Simplify right side
   22,377.79x = 395,880,983.61
5. Step 5: Solve for x
   x = 395,880,983.61/22,377.79
6. Step 6: Final answer
   x = 17,690.80