Finding the Fourth Proportional to 21,843,512, 30,144,059.52 and 12,185,720

Step by Step Solution

1. Step 1: Write the proportion equation
   21,843,512 : 30,144,059.52 = 12,185,720 : x
2. Step 2: Convert to fraction form
   21,843,512/30,144,059.52 = 12,185,720/x
3. Step 3: Cross multiply
   21,843,512x = 30,144,059.52 × 12,185,720
4. Step 4: Simplify right side
   21,843,512x = 367,327,068,974,054.38
5. Step 5: Solve for x
   x = 367,327,068,974,054.38/21,843,512
6. Step 6: Final answer
   x = 16,816,300.83