Finding the Fourth Proportional to 5,196.72, 7,795.77 and 1,909.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.72 : 7,795.77 = 1,909.86 : x
2. Step 2: Convert to fraction form
   5,196.72/7,795.77 = 1,909.86/x
3. Step 3: Cross multiply
   5,196.72x = 7,795.77 × 1,909.86
4. Step 4: Simplify right side
   5,196.72x = 14,888,829.29
5. Step 5: Solve for x
   x = 14,888,829.29/5,196.72
6. Step 6: Final answer
   x = 2,865.04