Finding the Fourth Proportional to 21,779.34, 32,665.23 and 9,306.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,779.34 : 32,665.23 = 9,306.42 : x
2. Step 2: Convert to fraction form
   21,779.34/32,665.23 = 9,306.42/x
3. Step 3: Cross multiply
   21,779.34x = 32,665.23 × 9,306.42
4. Step 4: Simplify right side
   21,779.34x = 303,996,349.78
5. Step 5: Solve for x
   x = 303,996,349.78/21,779.34
6. Step 6: Final answer
   x = 13,958.01