Finding the Fourth Proportional to 5,176.78, 7,758.62 and 3,196.02

Step by Step Solution

1. Step 1: Write the proportion equation
   5,176.78 : 7,758.62 = 3,196.02 : x
2. Step 2: Convert to fraction form
   5,176.78/7,758.62 = 3,196.02/x
3. Step 3: Cross multiply
   5,176.78x = 7,758.62 × 3,196.02
4. Step 4: Simplify right side
   5,176.78x = 24,796,704.69
5. Step 5: Solve for x
   x = 24,796,704.69/5,176.78
6. Step 6: Final answer
   x = 4,789.99