Finding the Fourth Proportional to 21,073,076.61, 29,085,524.04 and 12,811,383.39

Step by Step Solution

1. Step 1: Write the proportion equation
   21,073,076.61 : 29,085,524.04 = 12,811,383.39 : x
2. Step 2: Convert to fraction form
   21,073,076.61/29,085,524.04 = 12,811,383.39/x
3. Step 3: Cross multiply
   21,073,076.61x = 29,085,524.04 × 12,811,383.39
4. Step 4: Simplify right side
   21,073,076.61x = 372,625,799,575,501.69
5. Step 5: Solve for x
   x = 372,625,799,575,501.69/21,073,076.61
6. Step 6: Final answer
   x = 17,682,553.26