Finding the Fourth Proportional to 5,196.83, 7,789.86 and 2,421.23

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.83 : 7,789.86 = 2,421.23 : x
2. Step 2: Convert to fraction form
   5,196.83/7,789.86 = 2,421.23/x
3. Step 3: Cross multiply
   5,196.83x = 7,789.86 × 2,421.23
4. Step 4: Simplify right side
   5,196.83x = 18,861,003.78
5. Step 5: Solve for x
   x = 18,861,003.78/5,196.83
6. Step 6: Final answer
   x = 3,629.33