Finding the Fourth Proportional to 21,616.45, 29,833.25 and 12,057.84

Step by Step Solution

1. Step 1: Write the proportion equation
   21,616.45 : 29,833.25 = 12,057.84 : x
2. Step 2: Convert to fraction form
   21,616.45/29,833.25 = 12,057.84/x
3. Step 3: Cross multiply
   21,616.45x = 29,833.25 × 12,057.84
4. Step 4: Simplify right side
   21,616.45x = 359,724,494.89
5. Step 5: Solve for x
   x = 359,724,494.89/21,616.45
6. Step 6: Final answer
   x = 16,641.24