Finding the Fourth Proportional to 9,174.72, 13,758.60 and 3,906.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,174.72 : 13,758.60 = 3,906.42 : x
2. Step 2: Convert to fraction form
   9,174.72/13,758.60 = 3,906.42/x
3. Step 3: Cross multiply
   9,174.72x = 13,758.60 × 3,906.42
4. Step 4: Simplify right side
   9,174.72x = 53,746,870.21
5. Step 5: Solve for x
   x = 53,746,870.21/9,174.72
6. Step 6: Final answer
   x = 5,858.15