Finding the Fourth Proportional to 6,807.69, 9,394.61 and 3,977.01

Step by Step Solution

1. Step 1: Write the proportion equation
   6,807.69 : 9,394.61 = 3,977.01 : x
2. Step 2: Convert to fraction form
   6,807.69/9,394.61 = 3,977.01/x
3. Step 3: Cross multiply
   6,807.69x = 9,394.61 × 3,977.01
4. Step 4: Simplify right side
   6,807.69x = 37,362,438.03
5. Step 5: Solve for x
   x = 37,362,438.03/6,807.69
6. Step 6: Final answer
   x = 5,488.27