Finding the Fourth Proportional to 22,215,178.32, 33,300,903.30 and 12,981,431.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,215,178.32 : 33,300,903.30 = 12,981,431.94 : x
2. Step 2: Convert to fraction form
   22,215,178.32/33,300,903.30 = 12,981,431.94/x
3. Step 3: Cross multiply
   22,215,178.32x = 33,300,903.30 × 12,981,431.94
4. Step 4: Simplify right side
   22,215,178.32x = 432,293,409,729,471.38
5. Step 5: Solve for x
   x = 432,293,409,729,471.38/22,215,178.32
6. Step 6: Final answer
   x = 19,459,371.58