Finding the Fourth Proportional to 21,308.82, 29,369.43 and 15,994.41

Step by Step Solution

1. Step 1: Write the proportion equation
   21,308.82 : 29,369.43 = 15,994.41 : x
2. Step 2: Convert to fraction form
   21,308.82/29,369.43 = 15,994.41/x
3. Step 3: Cross multiply
   21,308.82x = 29,369.43 × 15,994.41
4. Step 4: Simplify right side
   21,308.82x = 469,746,704.89
5. Step 5: Solve for x
   x = 469,746,704.89/21,308.82
6. Step 6: Final answer
   x = 22,044.71