Finding the Fourth Proportional to 7,022.02, 9,690.42 and 3,878.32

Step by Step Solution

1. Step 1: Write the proportion equation
   7,022.02 : 9,690.42 = 3,878.32 : x
2. Step 2: Convert to fraction form
   7,022.02/9,690.42 = 3,878.32/x
3. Step 3: Cross multiply
   7,022.02x = 9,690.42 × 3,878.32
4. Step 4: Simplify right side
   7,022.02x = 37,582,549.69
5. Step 5: Solve for x
   x = 37,582,549.69/7,022.02
6. Step 6: Final answer
   x = 5,352.10