Finding the Fourth Proportional to 21,667.55, 32,487.75 and 8,504.64

Step by Step Solution

1. Step 1: Write the proportion equation
   21,667.55 : 32,487.75 = 8,504.64 : x
2. Step 2: Convert to fraction form
   21,667.55/32,487.75 = 8,504.64/x
3. Step 3: Cross multiply
   21,667.55x = 32,487.75 × 8,504.64
4. Step 4: Simplify right side
   21,667.55x = 276,296,618.16
5. Step 5: Solve for x
   x = 276,296,618.16/21,667.55
6. Step 6: Final answer
   x = 12,751.63