Finding the Fourth Proportional to 12,175.56, 16,802.28 and 8,451.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,175.56 : 16,802.28 = 8,451.72 : x
2. Step 2: Convert to fraction form
   12,175.56/16,802.28 = 8,451.72/x
3. Step 3: Cross multiply
   12,175.56x = 16,802.28 × 8,451.72
4. Step 4: Simplify right side
   12,175.56x = 142,008,165.92
5. Step 5: Solve for x
   x = 142,008,165.92/12,175.56
6. Step 6: Final answer
   x = 11,663.38