Finding the Fourth Proportional to 9,932.79, 13,707.21 and 5,456.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,932.79 : 13,707.21 = 5,456.58 : x
2. Step 2: Convert to fraction form
   9,932.79/13,707.21 = 5,456.58/x
3. Step 3: Cross multiply
   9,932.79x = 13,707.21 × 5,456.58
4. Step 4: Simplify right side
   9,932.79x = 74,794,487.94
5. Step 5: Solve for x
   x = 74,794,487.94/9,932.79
6. Step 6: Final answer
   x = 7,530.06