Finding the Fourth Proportional to 7,022.34, 9,690.60 and 3,878.46

Step by Step Solution

1. Step 1: Write the proportion equation
   7,022.34 : 9,690.60 = 3,878.46 : x
2. Step 2: Convert to fraction form
   7,022.34/9,690.60 = 3,878.46/x
3. Step 3: Cross multiply
   7,022.34x = 9,690.60 × 3,878.46
4. Step 4: Simplify right side
   7,022.34x = 37,584,604.48
5. Step 5: Solve for x
   x = 37,584,604.48/7,022.34
6. Step 6: Final answer
   x = 5,352.15