Finding the Fourth Proportional to 20,323.89, 30,479.49 and 12,001.68

Step by Step Solution

1. Step 1: Write the proportion equation
   20,323.89 : 30,479.49 = 12,001.68 : x
2. Step 2: Convert to fraction form
   20,323.89/30,479.49 = 12,001.68/x
3. Step 3: Cross multiply
   20,323.89x = 30,479.49 × 12,001.68
4. Step 4: Simplify right side
   20,323.89x = 365,805,085.54
5. Step 5: Solve for x
   x = 365,805,085.54/20,323.89
6. Step 6: Final answer
   x = 17,998.77