Finding the Fourth Proportional to 12,443.52, 17,172.38 and 6,778.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.52 : 17,172.38 = 6,778.48 : x
2. Step 2: Convert to fraction form
   12,443.52/17,172.38 = 6,778.48/x
3. Step 3: Cross multiply
   12,443.52x = 17,172.38 × 6,778.48
4. Step 4: Simplify right side
   12,443.52x = 116,402,634.38
5. Step 5: Solve for x
   x = 116,402,634.38/12,443.52
6. Step 6: Final answer
   x = 9,354.48