Finding the Fourth Proportional to 12,800.82, 17,654.28 and 8,322.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,800.82 : 17,654.28 = 8,322.32 : x
2. Step 2: Convert to fraction form
   12,800.82/17,654.28 = 8,322.32/x
3. Step 3: Cross multiply
   12,800.82x = 17,654.28 × 8,322.32
4. Step 4: Simplify right side
   12,800.82x = 146,924,567.53
5. Step 5: Solve for x
   x = 146,924,567.53/12,800.82
6. Step 6: Final answer
   x = 11,477.75