Finding the Fourth Proportional to 7,004.28, 9,665.55 and 3,859.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,004.28 : 9,665.55 = 3,859.86 : x
2. Step 2: Convert to fraction form
   7,004.28/9,665.55 = 3,859.86/x
3. Step 3: Cross multiply
   7,004.28x = 9,665.55 × 3,859.86
4. Step 4: Simplify right side
   7,004.28x = 37,307,669.82
5. Step 5: Solve for x
   x = 37,307,669.82/7,004.28
6. Step 6: Final answer
   x = 5,326.41