Finding the Fourth Proportional to 21,769.47, 30,048.71 and 12,344.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,769.47 : 30,048.71 = 12,344.31 : x
2. Step 2: Convert to fraction form
   21,769.47/30,048.71 = 12,344.31/x
3. Step 3: Cross multiply
   21,769.47x = 30,048.71 × 12,344.31
4. Step 4: Simplify right side
   21,769.47x = 370,930,591.34
5. Step 5: Solve for x
   x = 370,930,591.34/21,769.47
6. Step 6: Final answer
   x = 17,039.03