Finding the Fourth Proportional to 7,175.88, 9,902.83 and 3,945.83

Step by Step Solution

1. Step 1: Write the proportion equation
   7,175.88 : 9,902.83 = 3,945.83 : x
2. Step 2: Convert to fraction form
   7,175.88/9,902.83 = 3,945.83/x
3. Step 3: Cross multiply
   7,175.88x = 9,902.83 × 3,945.83
4. Step 4: Simplify right side
   7,175.88x = 39,074,908.46
5. Step 5: Solve for x
   x = 39,074,908.46/7,175.88
6. Step 6: Final answer
   x = 5,445.31