Finding the Fourth Proportional to 21,744.72, 32,597.52 and 7,884

Step by Step Solution

1. Step 1: Write the proportion equation
   21,744.72 : 32,597.52 = 7,884 : x
2. Step 2: Convert to fraction form
   21,744.72/32,597.52 = 7,884/x
3. Step 3: Cross multiply
   21,744.72x = 32,597.52 × 7,884
4. Step 4: Simplify right side
   21,744.72x = 256,998,847.68
5. Step 5: Solve for x
   x = 256,998,847.68/21,744.72
6. Step 6: Final answer
   x = 11,818.91