Finding the Fourth Proportional to 6,112.88, 8,436.31 and 3,424.05

Step by Step Solution

1. Step 1: Write the proportion equation
   6,112.88 : 8,436.31 = 3,424.05 : x
2. Step 2: Convert to fraction form
   6,112.88/8,436.31 = 3,424.05/x
3. Step 3: Cross multiply
   6,112.88x = 8,436.31 × 3,424.05
4. Step 4: Simplify right side
   6,112.88x = 28,886,347.26
5. Step 5: Solve for x
   x = 28,886,347.26/6,112.88
6. Step 6: Final answer
   x = 4,725.49