Finding the Fourth Proportional to 7,104.72, 10,655.79 and 1,909.38

Step by Step Solution

1. Step 1: Write the proportion equation
   7,104.72 : 10,655.79 = 1,909.38 : x
2. Step 2: Convert to fraction form
   7,104.72/10,655.79 = 1,909.38/x
3. Step 3: Cross multiply
   7,104.72x = 10,655.79 × 1,909.38
4. Step 4: Simplify right side
   7,104.72x = 20,345,952.31
5. Step 5: Solve for x
   x = 20,345,952.31/7,104.72
6. Step 6: Final answer
   x = 2,863.72