Finding the Fourth Proportional to 9,150.73, 13,729.71 and 3,886.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150.73 : 13,729.71 = 3,886.87 : x
2. Step 2: Convert to fraction form
   9,150.73/13,729.71 = 3,886.87/x
3. Step 3: Cross multiply
   9,150.73x = 13,729.71 × 3,886.87
4. Step 4: Simplify right side
   9,150.73x = 53,365,597.91
5. Step 5: Solve for x
   x = 53,365,597.91/9,150.73
6. Step 6: Final answer
   x = 5,831.84