Finding the Fourth Proportional to 21,956,497.48, 30,300,144.42 and 12,167,105.20

Step by Step Solution

1. Step 1: Write the proportion equation
   21,956,497.48 : 30,300,144.42 = 12,167,105.20 : x
2. Step 2: Convert to fraction form
   21,956,497.48/30,300,144.42 = 12,167,105.20/x
3. Step 3: Cross multiply
   21,956,497.48x = 30,300,144.42 × 12,167,105.20
4. Step 4: Simplify right side
   21,956,497.48x = 368,665,044,733,333
5. Step 5: Solve for x
   x = 368,665,044,733,333/21,956,497.48
6. Step 6: Final answer
   x = 16,790,703.76