Finding the Fourth Proportional to 9,078.42, 13,615.92 and 3,811.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,078.42 : 13,615.92 = 3,811.98 : x
2. Step 2: Convert to fraction form
   9,078.42/13,615.92 = 3,811.98/x
3. Step 3: Cross multiply
   9,078.42x = 13,615.92 × 3,811.98
4. Step 4: Simplify right side
   9,078.42x = 51,903,614.72
5. Step 5: Solve for x
   x = 51,903,614.72/9,078.42
6. Step 6: Final answer
   x = 5,717.25