Finding the Fourth Proportional to 21,419, 29,576.46 and 13,474.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,419 : 29,576.46 = 13,474.52 : x
2. Step 2: Convert to fraction form
   21,419/29,576.46 = 13,474.52/x
3. Step 3: Cross multiply
   21,419x = 29,576.46 × 13,474.52
4. Step 4: Simplify right side
   21,419x = 398,528,601.80
5. Step 5: Solve for x
   x = 398,528,601.80/21,419
6. Step 6: Final answer
   x = 18,606.31