Finding the Fourth Proportional to 21,447.96, 29,598.17 and 12,016.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,447.96 : 29,598.17 = 12,016.59 : x
2. Step 2: Convert to fraction form
   21,447.96/29,598.17 = 12,016.59/x
3. Step 3: Cross multiply
   21,447.96x = 29,598.17 × 12,016.59
4. Step 4: Simplify right side
   21,447.96x = 355,669,013.56
5. Step 5: Solve for x
   x = 355,669,013.56/21,447.96
6. Step 6: Final answer
   x = 16,582.88