Finding the Fourth Proportional to 21,096.42, 29,114.14 and 12,145.22

Step by Step Solution

1. Step 1: Write the proportion equation
   21,096.42 : 29,114.14 = 12,145.22 : x
2. Step 2: Convert to fraction form
   21,096.42/29,114.14 = 12,145.22/x
3. Step 3: Cross multiply
   21,096.42x = 29,114.14 × 12,145.22
4. Step 4: Simplify right side
   21,096.42x = 353,597,635.41
5. Step 5: Solve for x
   x = 353,597,635.41/21,096.42
6. Step 6: Final answer
   x = 16,761.03