Finding the Fourth Proportional to 21,691,950.72, 29,937,546.72 and 12,524,578.08

Step by Step Solution

1. Step 1: Write the proportion equation
   21,691,950.72 : 29,937,546.72 = 12,524,578.08 : x
2. Step 2: Convert to fraction form
   21,691,950.72/29,937,546.72 = 12,524,578.08/x
3. Step 3: Cross multiply
   21,691,950.72x = 29,937,546.72 × 12,524,578.08
4. Step 4: Simplify right side
   21,691,950.72x = 374,955,141,418,287.88
5. Step 5: Solve for x
   x = 374,955,141,418,287.88/21,691,950.72
6. Step 6: Final answer
   x = 17,285,450.55