Finding the Fourth Proportional to 9,796.78, 13,519.45 and 5,547.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,796.78 : 13,519.45 = 5,547.72 : x
2. Step 2: Convert to fraction form
   9,796.78/13,519.45 = 5,547.72/x
3. Step 3: Cross multiply
   9,796.78x = 13,519.45 × 5,547.72
4. Step 4: Simplify right side
   9,796.78x = 75,002,123.15
5. Step 5: Solve for x
   x = 75,002,123.15/9,796.78
6. Step 6: Final answer
   x = 7,655.79