Finding the Fourth Proportional to 21,496.56, 29,665.22 and 12,065.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,496.56 : 29,665.22 = 12,065.10 : x
2. Step 2: Convert to fraction form
   21,496.56/29,665.22 = 12,065.10/x
3. Step 3: Cross multiply
   21,496.56x = 29,665.22 × 12,065.10
4. Step 4: Simplify right side
   21,496.56x = 357,913,845.82
5. Step 5: Solve for x
   x = 357,913,845.82/21,496.56
6. Step 6: Final answer
   x = 16,649.82