Finding the Fourth Proportional to 7,190.56, 10,786.73 and 2,811.09

Step by Step Solution

1. Step 1: Write the proportion equation
   7,190.56 : 10,786.73 = 2,811.09 : x
2. Step 2: Convert to fraction form
   7,190.56/10,786.73 = 2,811.09/x
3. Step 3: Cross multiply
   7,190.56x = 10,786.73 × 2,811.09
4. Step 4: Simplify right side
   7,190.56x = 30,322,454.78
5. Step 5: Solve for x
   x = 30,322,454.78/7,190.56
6. Step 6: Final answer
   x = 4,216.98