Finding the Fourth Proportional to 7,036.16, 9,709.20 and 3,892.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,036.16 : 9,709.20 = 3,892.12 : x
2. Step 2: Convert to fraction form
   7,036.16/9,709.20 = 3,892.12/x
3. Step 3: Cross multiply
   7,036.16x = 9,709.20 × 3,892.12
4. Step 4: Simplify right side
   7,036.16x = 37,789,371.50
5. Step 5: Solve for x
   x = 37,789,371.50/7,036.16
6. Step 6: Final answer
   x = 5,370.74