Finding the Fourth Proportional to 7,003.76, 9,665.18 and 3,860

Step by Step Solution

1. Step 1: Write the proportion equation
   7,003.76 : 9,665.18 = 3,860 : x
2. Step 2: Convert to fraction form
   7,003.76/9,665.18 = 3,860/x
3. Step 3: Cross multiply
   7,003.76x = 9,665.18 × 3,860
4. Step 4: Simplify right side
   7,003.76x = 37,307,594.80
5. Step 5: Solve for x
   x = 37,307,594.80/7,003.76
6. Step 6: Final answer
   x = 5,326.80