Finding the Fourth Proportional to 5,196.56, 7,795.98 and 1,686.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.56 : 7,795.98 = 1,686.78 : x
2. Step 2: Convert to fraction form
   5,196.56/7,795.98 = 1,686.78/x
3. Step 3: Cross multiply
   5,196.56x = 7,795.98 × 1,686.78
4. Step 4: Simplify right side
   5,196.56x = 13,150,103.14
5. Step 5: Solve for x
   x = 13,150,103.14/5,196.56
6. Step 6: Final answer
   x = 2,530.54