Finding the Fourth Proportional to 7,003.89, 9,664.80 and 3,860.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,003.89 : 9,664.80 = 3,860.10 : x
2. Step 2: Convert to fraction form
   7,003.89/9,664.80 = 3,860.10/x
3. Step 3: Cross multiply
   7,003.89x = 9,664.80 × 3,860.10
4. Step 4: Simplify right side
   7,003.89x = 37,307,094.48
5. Step 5: Solve for x
   x = 37,307,094.48/7,003.89
6. Step 6: Final answer
   x = 5,326.62