Finding the Fourth Proportional to 21,762.03, 30,029.89 and 12,328.23

Step by Step Solution

1. Step 1: Write the proportion equation
   21,762.03 : 30,029.89 = 12,328.23 : x
2. Step 2: Convert to fraction form
   21,762.03/30,029.89 = 12,328.23/x
3. Step 3: Cross multiply
   21,762.03x = 30,029.89 × 12,328.23
4. Step 4: Simplify right side
   21,762.03x = 370,215,390.79
5. Step 5: Solve for x
   x = 370,215,390.79/21,762.03
6. Step 6: Final answer
   x = 17,011.99