Finding the Fourth Proportional to 5,725.56, 7,893.42 and 3,954.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,725.56 : 7,893.42 = 3,954.12 : x
2. Step 2: Convert to fraction form
   5,725.56/7,893.42 = 3,954.12/x
3. Step 3: Cross multiply
   5,725.56x = 7,893.42 × 3,954.12
4. Step 4: Simplify right side
   5,725.56x = 31,211,529.89
5. Step 5: Solve for x
   x = 31,211,529.89/5,725.56
6. Step 6: Final answer
   x = 5,451.26