Finding the Fourth Proportional to 5,435.46, 7,507.56 and 3,940.98

Step by Step Solution

1. Step 1: Write the proportion equation
   5,435.46 : 7,507.56 = 3,940.98 : x
2. Step 2: Convert to fraction form
   5,435.46/7,507.56 = 3,940.98/x
3. Step 3: Cross multiply
   5,435.46x = 7,507.56 × 3,940.98
4. Step 4: Simplify right side
   5,435.46x = 29,587,143.81
5. Step 5: Solve for x
   x = 29,587,143.81/5,435.46
6. Step 6: Final answer
   x = 5,443.36