Finding the Fourth Proportional to 21,849.05, 32,806.38 and 12,499.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,849.05 : 32,806.38 = 12,499.62 : x
2. Step 2: Convert to fraction form
   21,849.05/32,806.38 = 12,499.62/x
3. Step 3: Cross multiply
   21,849.05x = 32,806.38 × 12,499.62
4. Step 4: Simplify right side
   21,849.05x = 410,067,283.58
5. Step 5: Solve for x
   x = 410,067,283.58/21,849.05
6. Step 6: Final answer
   x = 18,768.20