Finding the Fourth Proportional to 7,105.88, 10,645.86 and 3,969.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,105.88 : 10,645.86 = 3,969.56 : x
2. Step 2: Convert to fraction form
   7,105.88/10,645.86 = 3,969.56/x
3. Step 3: Cross multiply
   7,105.88x = 10,645.86 × 3,969.56
4. Step 4: Simplify right side
   7,105.88x = 42,259,380.02
5. Step 5: Solve for x
   x = 42,259,380.02/7,105.88
6. Step 6: Final answer
   x = 5,947.10