Finding the Fourth Proportional to 5,608.98, 8,405.61 and 3,111.32

Step by Step Solution

1. Step 1: Write the proportion equation
   5,608.98 : 8,405.61 = 3,111.32 : x
2. Step 2: Convert to fraction form
   5,608.98/8,405.61 = 3,111.32/x
3. Step 3: Cross multiply
   5,608.98x = 8,405.61 × 3,111.32
4. Step 4: Simplify right side
   5,608.98x = 26,152,500.48
5. Step 5: Solve for x
   x = 26,152,500.48/5,608.98
6. Step 6: Final answer
   x = 4,662.61