Finding the Fourth Proportional to 7,003.48, 9,664.50 and 3,859.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,003.48 : 9,664.50 = 3,859.72 : x
2. Step 2: Convert to fraction form
   7,003.48/9,664.50 = 3,859.72/x
3. Step 3: Cross multiply
   7,003.48x = 9,664.50 × 3,859.72
4. Step 4: Simplify right side
   7,003.48x = 37,302,263.94
5. Step 5: Solve for x
   x = 37,302,263.94/7,003.48
6. Step 6: Final answer
   x = 5,326.25