Finding the Fourth Proportional to 7,036.48, 9,709.86 and 3,892.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,036.48 : 9,709.86 = 3,892.78 : x
2. Step 2: Convert to fraction form
   7,036.48/9,709.86 = 3,892.78/x
3. Step 3: Cross multiply
   7,036.48x = 9,709.86 × 3,892.78
4. Step 4: Simplify right side
   7,036.48x = 37,798,348.81
5. Step 5: Solve for x
   x = 37,798,348.81/7,036.48
6. Step 6: Final answer
   x = 5,371.77