Finding the Fourth Proportional to 6,109.10, 8,431.64 and 3,591.19

Step by Step Solution

1. Step 1: Write the proportion equation
   6,109.10 : 8,431.64 = 3,591.19 : x
2. Step 2: Convert to fraction form
   6,109.10/8,431.64 = 3,591.19/x
3. Step 3: Cross multiply
   6,109.10x = 8,431.64 × 3,591.19
4. Step 4: Simplify right side
   6,109.10x = 30,279,621.25
5. Step 5: Solve for x
   x = 30,279,621.25/6,109.10
6. Step 6: Final answer
   x = 4,956.48