Finding the Fourth Proportional to 21,667.55, 32,501.29 and 8,161.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,667.55 : 32,501.29 = 8,161.24 : x
2. Step 2: Convert to fraction form
   21,667.55/32,501.29 = 8,161.24/x
3. Step 3: Cross multiply
   21,667.55x = 32,501.29 × 8,161.24
4. Step 4: Simplify right side
   21,667.55x = 265,250,928.22
5. Step 5: Solve for x
   x = 265,250,928.22/21,667.55
6. Step 6: Final answer
   x = 12,241.85