Finding the Fourth Proportional to 9,128.43, 13,695.37 and 3,860.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.43 : 13,695.37 = 3,860.71 : x
2. Step 2: Convert to fraction form
   9,128.43/13,695.37 = 3,860.71/x
3. Step 3: Cross multiply
   9,128.43x = 13,695.37 × 3,860.71
4. Step 4: Simplify right side
   9,128.43x = 52,873,808.02
5. Step 5: Solve for x
   x = 52,873,808.02/9,128.43
6. Step 6: Final answer
   x = 5,792.21