Finding the Fourth Proportional to 21,493.35, 29,660.58 and 12,061.71

Step by Step Solution

1. Step 1: Write the proportion equation
   21,493.35 : 29,660.58 = 12,061.71 : x
2. Step 2: Convert to fraction form
   21,493.35/29,660.58 = 12,061.71/x
3. Step 3: Cross multiply
   21,493.35x = 29,660.58 × 12,061.71
4. Step 4: Simplify right side
   21,493.35x = 357,757,314.39
5. Step 5: Solve for x
   x = 357,757,314.39/21,493.35
6. Step 6: Final answer
   x = 16,645.02