Finding the Fourth Proportional to 21,978,806.04, 30,332,568.24 and 12,192,405.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,978,806.04 : 30,332,568.24 = 12,192,405.48 : x
2. Step 2: Convert to fraction form
   21,978,806.04/30,332,568.24 = 12,192,405.48/x
3. Step 3: Cross multiply
   21,978,806.04x = 30,332,568.24 × 12,192,405.48
4. Step 4: Simplify right side
   21,978,806.04x = 369,826,971,231,849.94
5. Step 5: Solve for x
   x = 369,826,971,231,849.94/21,978,806.04
6. Step 6: Final answer
   x = 16,826,526.91