Finding the Fourth Proportional to 21,086.56, 29,096.48 and 12,012.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,086.56 : 29,096.48 = 12,012.16 : x
2. Step 2: Convert to fraction form
   21,086.56/29,096.48 = 12,012.16/x
3. Step 3: Cross multiply
   21,086.56x = 29,096.48 × 12,012.16
4. Step 4: Simplify right side
   21,086.56x = 349,511,573.20
5. Step 5: Solve for x
   x = 349,511,573.20/21,086.56
6. Step 6: Final answer
   x = 16,575.09