Finding the Fourth Proportional to 21,462.05, 29,617.70 and 12,030

Step by Step Solution

1. Step 1: Write the proportion equation
   21,462.05 : 29,617.70 = 12,030 : x
2. Step 2: Convert to fraction form
   21,462.05/29,617.70 = 12,030/x
3. Step 3: Cross multiply
   21,462.05x = 29,617.70 × 12,030
4. Step 4: Simplify right side
   21,462.05x = 356,300,870.85
5. Step 5: Solve for x
   x = 356,300,870.85/21,462.05
6. Step 6: Final answer
   x = 16,601.44