Finding the Fourth Proportional to 21,906,711.96, 30,229,233.72 and 12,116,945.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,906,711.96 : 30,229,233.72 = 12,116,945.46 : x
2. Step 2: Convert to fraction form
   21,906,711.96/30,229,233.72 = 12,116,945.46/x
3. Step 3: Cross multiply
   21,906,711.96x = 30,229,233.72 × 12,116,945.46
4. Step 4: Simplify right side
   21,906,711.96x = 366,285,976,282,832.94
5. Step 5: Solve for x
   x = 366,285,976,282,832.94/21,906,711.96
6. Step 6: Final answer
   x = 16,720,262.58