Finding the Fourth Proportional to 4,643.42, 6,408.86 and 3,151.82

Step by Step Solution

1. Step 1: Write the proportion equation
   4,643.42 : 6,408.86 = 3,151.82 : x
2. Step 2: Convert to fraction form
   4,643.42/6,408.86 = 3,151.82/x
3. Step 3: Cross multiply
   4,643.42x = 6,408.86 × 3,151.82
4. Step 4: Simplify right side
   4,643.42x = 20,199,564.98
5. Step 5: Solve for x
   x = 20,199,564.98/4,643.42
6. Step 6: Final answer
   x = 4,350.15