Finding the Fourth Proportional to 21,789,427.67, 30,069,046.80 and 12,000,782.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,789,427.67 : 30,069,046.80 = 12,000,782.69 : x
2. Step 2: Convert to fraction form
   21,789,427.67/30,069,046.80 = 12,000,782.69/x
3. Step 3: Cross multiply
   21,789,427.67x = 30,069,046.80 × 12,000,782.69
4. Step 4: Simplify right side
   21,789,427.67x = 360,852,096,191,894.69
5. Step 5: Solve for x
   x = 360,852,096,191,894.69/21,789,427.67
6. Step 6: Final answer
   x = 16,560,879.97