Finding the Fourth Proportional to 8,904.49, 12,287.97 and 5,127.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,904.49 : 12,287.97 = 5,127.57 : x
2. Step 2: Convert to fraction form
   8,904.49/12,287.97 = 5,127.57/x
3. Step 3: Cross multiply
   8,904.49x = 12,287.97 × 5,127.57
4. Step 4: Simplify right side
   8,904.49x = 63,007,426.33
5. Step 5: Solve for x
   x = 63,007,426.33/8,904.49
6. Step 6: Final answer
   x = 7,075.92