Finding the Fourth Proportional to 21,789,429.42, 30,069,049.21 and 12,000,784.44

Step by Step Solution

1. Step 1: Write the proportion equation
   21,789,429.42 : 30,069,049.21 = 12,000,784.44 : x
2. Step 2: Convert to fraction form
   21,789,429.42/30,069,049.21 = 12,000,784.44/x
3. Step 3: Cross multiply
   21,789,429.42x = 30,069,049.21 × 12,000,784.44
4. Step 4: Simplify right side
   21,789,429.42x = 360,852,177,884,962.31
5. Step 5: Solve for x
   x = 360,852,177,884,962.31/21,789,429.42
6. Step 6: Final answer
   x = 16,560,882.39