Finding the Fourth Proportional to 21,101.96, 29,119.83 and 12,150.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,101.96 : 29,119.83 = 12,150.38 : x
2. Step 2: Convert to fraction form
   21,101.96/29,119.83 = 12,150.38/x
3. Step 3: Cross multiply
   21,101.96x = 29,119.83 × 12,150.38
4. Step 4: Simplify right side
   21,101.96x = 353,817,000.04
5. Step 5: Solve for x
   x = 353,817,000.04/21,101.96
6. Step 6: Final answer
   x = 16,767.02