Finding the Fourth Proportional to 21,120.59, 29,105.57 and 16,076.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,120.59 : 29,105.57 = 16,076.82 : x
2. Step 2: Convert to fraction form
   21,120.59/29,105.57 = 16,076.82/x
3. Step 3: Cross multiply
   21,120.59x = 29,105.57 × 16,076.82
4. Step 4: Simplify right side
   21,120.59x = 467,924,783.98
5. Step 5: Solve for x
   x = 467,924,783.98/21,120.59
6. Step 6: Final answer
   x = 22,154.92