Finding the Fourth Proportional to 6,739.61, 10,111.91 and 3,231.09

Step by Step Solution

1. Step 1: Write the proportion equation
   6,739.61 : 10,111.91 = 3,231.09 : x
2. Step 2: Convert to fraction form
   6,739.61/10,111.91 = 3,231.09/x
3. Step 3: Cross multiply
   6,739.61x = 10,111.91 × 3,231.09
4. Step 4: Simplify right side
   6,739.61x = 32,672,475.13
5. Step 5: Solve for x
   x = 32,672,475.13/6,739.61
6. Step 6: Final answer
   x = 4,847.83