Finding the Fourth Proportional to 21,940.50, 30,277.89 and 12,004.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,940.50 : 30,277.89 = 12,004.50 : x
2. Step 2: Convert to fraction form
   21,940.50/30,277.89 = 12,004.50/x
3. Step 3: Cross multiply
   21,940.50x = 30,277.89 × 12,004.50
4. Step 4: Simplify right side
   21,940.50x = 363,470,930.51
5. Step 5: Solve for x
   x = 363,470,930.51/21,940.50
6. Step 6: Final answer
   x = 16,566.21