Finding the Fourth Proportional to 20,540.88, 28,346.82 and 12,049.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,540.88 : 28,346.82 = 12,049.50 : x
2. Step 2: Convert to fraction form
   20,540.88/28,346.82 = 12,049.50/x
3. Step 3: Cross multiply
   20,540.88x = 28,346.82 × 12,049.50
4. Step 4: Simplify right side
   20,540.88x = 341,565,007.59
5. Step 5: Solve for x
   x = 341,565,007.59/20,540.88
6. Step 6: Final answer
   x = 16,628.55