Finding the Fourth Proportional to 21,981,817.68, 30,338,540.88 and 12,195,414.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,981,817.68 : 30,338,540.88 = 12,195,414.82 : x
2. Step 2: Convert to fraction form
   21,981,817.68/30,338,540.88 = 12,195,414.82/x
3. Step 3: Cross multiply
   21,981,817.68x = 30,338,540.88 × 12,195,414.82
4. Step 4: Simplify right side
   21,981,817.68x = 369,991,091,065,127.81
5. Step 5: Solve for x
   x = 369,991,091,065,127.81/21,981,817.68
6. Step 6: Final answer
   x = 16,831,687.74