Finding the Fourth Proportional to 21,857.72, 32,766.90 and 8,003.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,857.72 : 32,766.90 = 8,003.48 : x
2. Step 2: Convert to fraction form
   21,857.72/32,766.90 = 8,003.48/x
3. Step 3: Cross multiply
   21,857.72x = 32,766.90 × 8,003.48
4. Step 4: Simplify right side
   21,857.72x = 262,249,228.81
5. Step 5: Solve for x
   x = 262,249,228.81/21,857.72
6. Step 6: Final answer
   x = 11,998.01