Finding the Fourth Proportional to 7,101.88, 10,639.86 and 3,965.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,101.88 : 10,639.86 = 3,965.56 : x
2. Step 2: Convert to fraction form
   7,101.88/10,639.86 = 3,965.56/x
3. Step 3: Cross multiply
   7,101.88x = 10,639.86 × 3,965.56
4. Step 4: Simplify right side
   7,101.88x = 42,193,003.22
5. Step 5: Solve for x
   x = 42,193,003.22/7,101.88
6. Step 6: Final answer
   x = 5,941.10