Finding the Fourth Proportional to 5,607.42, 7,730.15 and 3,923.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,607.42 : 7,730.15 = 3,923.61 : x
2. Step 2: Convert to fraction form
   5,607.42/7,730.15 = 3,923.61/x
3. Step 3: Cross multiply
   5,607.42x = 7,730.15 × 3,923.61
4. Step 4: Simplify right side
   5,607.42x = 30,330,093.84
5. Step 5: Solve for x
   x = 30,330,093.84/5,607.42
6. Step 6: Final answer
   x = 5,408.92