Finding the Fourth Proportional to 21,496.29, 29,664.90 and 12,064.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,496.29 : 29,664.90 = 12,064.86 : x
2. Step 2: Convert to fraction form
   21,496.29/29,664.90 = 12,064.86/x
3. Step 3: Cross multiply
   21,496.29x = 29,664.90 × 12,064.86
4. Step 4: Simplify right side
   21,496.29x = 357,902,865.41
5. Step 5: Solve for x
   x = 357,902,865.41/21,496.29
6. Step 6: Final answer
   x = 16,649.52