Finding the Fourth Proportional to 9,171.47, 13,754.51 and 3,906.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,171.47 : 13,754.51 = 3,906.42 : x
2. Step 2: Convert to fraction form
   9,171.47/13,754.51 = 3,906.42/x
3. Step 3: Cross multiply
   9,171.47x = 13,754.51 × 3,906.42
4. Step 4: Simplify right side
   9,171.47x = 53,730,873.42
5. Step 5: Solve for x
   x = 53,730,873.42/9,171.47
6. Step 6: Final answer
   x = 5,858.48