Finding the Fourth Proportional to 21,885,105.48, 30,205,195.83 and 12,723,062.64

Step by Step Solution

1. Step 1: Write the proportion equation
   21,885,105.48 : 30,205,195.83 = 12,723,062.64 : x
2. Step 2: Convert to fraction form
   21,885,105.48/30,205,195.83 = 12,723,062.64/x
3. Step 3: Cross multiply
   21,885,105.48x = 30,205,195.83 × 12,723,062.64
4. Step 4: Simplify right side
   21,885,105.48x = 384,302,598,598,556.81
5. Step 5: Solve for x
   x = 384,302,598,598,556.81/21,885,105.48
6. Step 6: Final answer
   x = 17,560,006.69