Finding the Fourth Proportional to 9,336.42, 12,883.59 and 5,357.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,336.42 : 12,883.59 = 5,357.43 : x
2. Step 2: Convert to fraction form
   9,336.42/12,883.59 = 5,357.43/x
3. Step 3: Cross multiply
   9,336.42x = 12,883.59 × 5,357.43
4. Step 4: Simplify right side
   9,336.42x = 69,022,931.57
5. Step 5: Solve for x
   x = 69,022,931.57/9,336.42
6. Step 6: Final answer
   x = 7,392.87