Finding the Fourth Proportional to 9,932.78, 13,707.72 and 5,456.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,932.78 : 13,707.72 = 5,456.48 : x
2. Step 2: Convert to fraction form
   9,932.78/13,707.72 = 5,456.48/x
3. Step 3: Cross multiply
   9,932.78x = 13,707.72 × 5,456.48
4. Step 4: Simplify right side
   9,932.78x = 74,795,900.03
5. Step 5: Solve for x
   x = 74,795,900.03/9,932.78
6. Step 6: Final answer
   x = 7,530.21