Finding the Fourth Proportional to 21,769.50, 30,044.75 and 12,817.83

Step by Step Solution

1. Step 1: Write the proportion equation
   21,769.50 : 30,044.75 = 12,817.83 : x
2. Step 2: Convert to fraction form
   21,769.50/30,044.75 = 12,817.83/x
3. Step 3: Cross multiply
   21,769.50x = 30,044.75 × 12,817.83
4. Step 4: Simplify right side
   21,769.50x = 385,108,433.80
5. Step 5: Solve for x
   x = 385,108,433.80/21,769.50
6. Step 6: Final answer
   x = 17,690.27