Finding the Fourth Proportional to 5,383.55, 7,429.86 and 3,146.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,383.55 : 7,429.86 = 3,146.15 : x
2. Step 2: Convert to fraction form
   5,383.55/7,429.86 = 3,146.15/x
3. Step 3: Cross multiply
   5,383.55x = 7,429.86 × 3,146.15
4. Step 4: Simplify right side
   5,383.55x = 23,375,416.89
5. Step 5: Solve for x
   x = 23,375,416.89/5,383.55
6. Step 6: Final answer
   x = 4,342.01