Finding the Fourth Proportional to 7,339.79, 10,128.82 and 3,982.58

Step by Step Solution

1. Step 1: Write the proportion equation
   7,339.79 : 10,128.82 = 3,982.58 : x
2. Step 2: Convert to fraction form
   7,339.79/10,128.82 = 3,982.58/x
3. Step 3: Cross multiply
   7,339.79x = 10,128.82 × 3,982.58
4. Step 4: Simplify right side
   7,339.79x = 40,338,803.52
5. Step 5: Solve for x
   x = 40,338,803.52/7,339.79
6. Step 6: Final answer
   x = 5,495.91