Finding the Fourth Proportional to 6,892.09, 9,509.50 and 3,907.59

Step by Step Solution

1. Step 1: Write the proportion equation
   6,892.09 : 9,509.50 = 3,907.59 : x
2. Step 2: Convert to fraction form
   6,892.09/9,509.50 = 3,907.59/x
3. Step 3: Cross multiply
   6,892.09x = 9,509.50 × 3,907.59
4. Step 4: Simplify right side
   6,892.09x = 37,159,249.82
5. Step 5: Solve for x
   x = 37,159,249.82/6,892.09
6. Step 6: Final answer
   x = 5,391.58