Finding the Fourth Proportional to 7,105.98, 10,657.37 and 3,987.38

Step by Step Solution

1. Step 1: Write the proportion equation
   7,105.98 : 10,657.37 = 3,987.38 : x
2. Step 2: Convert to fraction form
   7,105.98/10,657.37 = 3,987.38/x
3. Step 3: Cross multiply
   7,105.98x = 10,657.37 × 3,987.38
4. Step 4: Simplify right side
   7,105.98x = 42,494,960.65
5. Step 5: Solve for x
   x = 42,494,960.65/7,105.98
6. Step 6: Final answer
   x = 5,980.17