Finding the Fourth Proportional to 21,842,407.36, 30,143,162.76 and 11,919,930.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,842,407.36 : 30,143,162.76 = 11,919,930.72 : x
2. Step 2: Convert to fraction form
   21,842,407.36/30,143,162.76 = 11,919,930.72/x
3. Step 3: Cross multiply
   21,842,407.36x = 30,143,162.76 × 11,919,930.72
4. Step 4: Simplify right side
   21,842,407.36x = 359,304,411,780,884
5. Step 5: Solve for x
   x = 359,304,411,780,884/21,842,407.36
6. Step 6: Final answer
   x = 16,449,853.99