Finding the Fourth Proportional to 21,515.22, 32,265.55 and 8,185.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,515.22 : 32,265.55 = 8,185.05 : x
2. Step 2: Convert to fraction form
   21,515.22/32,265.55 = 8,185.05/x
3. Step 3: Cross multiply
   21,515.22x = 32,265.55 × 8,185.05
4. Step 4: Simplify right side
   21,515.22x = 264,095,140.03
5. Step 5: Solve for x
   x = 264,095,140.03/21,515.22
6. Step 6: Final answer
   x = 12,274.81