Finding the Fourth Proportional to 10,066.44, 15,031.82 and 8,221.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,066.44 : 15,031.82 = 8,221.12 : x
2. Step 2: Convert to fraction form
   10,066.44/15,031.82 = 8,221.12/x
3. Step 3: Cross multiply
   10,066.44x = 15,031.82 × 8,221.12
4. Step 4: Simplify right side
   10,066.44x = 123,578,396.04
5. Step 5: Solve for x
   x = 123,578,396.04/10,066.44
6. Step 6: Final answer
   x = 12,276.28