Finding the Fourth Proportional to 20,615.42, 30,926.17 and 7,464.72

Step by Step Solution

1. Step 1: Write the proportion equation
   20,615.42 : 30,926.17 = 7,464.72 : x
2. Step 2: Convert to fraction form
   20,615.42/30,926.17 = 7,464.72/x
3. Step 3: Cross multiply
   20,615.42x = 30,926.17 × 7,464.72
4. Step 4: Simplify right side
   20,615.42x = 230,855,199.72
5. Step 5: Solve for x
   x = 230,855,199.72/20,615.42
6. Step 6: Final answer
   x = 11,198.18