Finding the Fourth Proportional to 20,881,227.42, 28,819,557.18 and 12,179,399.82

Step by Step Solution

1. Step 1: Write the proportion equation
   20,881,227.42 : 28,819,557.18 = 12,179,399.82 : x
2. Step 2: Convert to fraction form
   20,881,227.42/28,819,557.18 = 12,179,399.82/x
3. Step 3: Cross multiply
   20,881,227.42x = 28,819,557.18 × 12,179,399.82
4. Step 4: Simplify right side
   20,881,227.42x = 351,004,909,530,571.69
5. Step 5: Solve for x
   x = 351,004,909,530,571.69/20,881,227.42
6. Step 6: Final answer
   x = 16,809,591.82