Finding the Fourth Proportional to 21,487.42, 32,233.31 and 7,447.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,487.42 : 32,233.31 = 7,447.42 : x
2. Step 2: Convert to fraction form
   21,487.42/32,233.31 = 7,447.42/x
3. Step 3: Cross multiply
   21,487.42x = 32,233.31 × 7,447.42
4. Step 4: Simplify right side
   21,487.42x = 240,054,997.56
5. Step 5: Solve for x
   x = 240,054,997.56/21,487.42
6. Step 6: Final answer
   x = 11,171.89