Finding the Fourth Proportional to 21,503.73, 29,675.61 and 12,072.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,503.73 : 29,675.61 = 12,072.27 : x
2. Step 2: Convert to fraction form
   21,503.73/29,675.61 = 12,072.27/x
3. Step 3: Cross multiply
   21,503.73x = 29,675.61 × 12,072.27
4. Step 4: Simplify right side
   21,503.73x = 358,251,976.33
5. Step 5: Solve for x
   x = 358,251,976.33/21,503.73
6. Step 6: Final answer
   x = 16,659.99