Finding the Fourth Proportional to 9,768.10, 13,479.96 and 5,291.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,768.10 : 13,479.96 = 5,291.96 : x
2. Step 2: Convert to fraction form
   9,768.10/13,479.96 = 5,291.96/x
3. Step 3: Cross multiply
   9,768.10x = 13,479.96 × 5,291.96
4. Step 4: Simplify right side
   9,768.10x = 71,335,442.82
5. Step 5: Solve for x
   x = 71,335,442.82/9,768.10
6. Step 6: Final answer
   x = 7,302.90