Finding the Fourth Proportional to 21,917.69, 32,891.10 and 8,066.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,917.69 : 32,891.10 = 8,066.69 : x
2. Step 2: Convert to fraction form
   21,917.69/32,891.10 = 8,066.69/x
3. Step 3: Cross multiply
   21,917.69x = 32,891.10 × 8,066.69
4. Step 4: Simplify right side
   21,917.69x = 265,322,236.10
5. Step 5: Solve for x
   x = 265,322,236.10/21,917.69
6. Step 6: Final answer
   x = 12,105.39