Finding the Fourth Proportional to 7,342.05, 10,131.85 and 3,984.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,342.05 : 10,131.85 = 3,984.72 : x
2. Step 2: Convert to fraction form
   7,342.05/10,131.85 = 3,984.72/x
3. Step 3: Cross multiply
   7,342.05x = 10,131.85 × 3,984.72
4. Step 4: Simplify right side
   7,342.05x = 40,372,585.33
5. Step 5: Solve for x
   x = 40,372,585.33/7,342.05
6. Step 6: Final answer
   x = 5,498.82