Finding the Fourth Proportional to 6,111.56, 9,154.57 and 3,909.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.56 : 9,154.57 = 3,909.10 : x
2. Step 2: Convert to fraction form
   6,111.56/9,154.57 = 3,909.10/x
3. Step 3: Cross multiply
   6,111.56x = 9,154.57 × 3,909.10
4. Step 4: Simplify right side
   6,111.56x = 35,786,064.27
5. Step 5: Solve for x
   x = 35,786,064.27/6,111.56
6. Step 6: Final answer
   x = 5,855.48