Finding the Fourth Proportional to 21,530.22, 29,708.34 and 12,096.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,530.22 : 29,708.34 = 12,096.96 : x
2. Step 2: Convert to fraction form
   21,530.22/29,708.34 = 12,096.96/x
3. Step 3: Cross multiply
   21,530.22x = 29,708.34 × 12,096.96
4. Step 4: Simplify right side
   21,530.22x = 359,380,600.65
5. Step 5: Solve for x
   x = 359,380,600.65/21,530.22
6. Step 6: Final answer
   x = 16,691.91