Finding the Fourth Proportional to 12,628.72, 17,424.12 and 7,322.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,628.72 : 17,424.12 = 7,322.48 : x
2. Step 2: Convert to fraction form
   12,628.72/17,424.12 = 7,322.48/x
3. Step 3: Cross multiply
   12,628.72x = 17,424.12 × 7,322.48
4. Step 4: Simplify right side
   12,628.72x = 127,587,770.22
5. Step 5: Solve for x
   x = 127,587,770.22/12,628.72
6. Step 6: Final answer
   x = 10,102.99