Finding the Fourth Proportional to 6,411.23, 9,611.10 and 3,451.25

Step by Step Solution

1. Step 1: Write the proportion equation
   6,411.23 : 9,611.10 = 3,451.25 : x
2. Step 2: Convert to fraction form
   6,411.23/9,611.10 = 3,451.25/x
3. Step 3: Cross multiply
   6,411.23x = 9,611.10 × 3,451.25
4. Step 4: Simplify right side
   6,411.23x = 33,170,260.82
5. Step 5: Solve for x
   x = 33,170,260.82/6,411.23
6. Step 6: Final answer
   x = 5,173.78