Finding the Fourth Proportional to 8,681.07, 13,018.89 and 3,133.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,681.07 : 13,018.89 = 3,133.69 : x
2. Step 2: Convert to fraction form
   8,681.07/13,018.89 = 3,133.69/x
3. Step 3: Cross multiply
   8,681.07x = 13,018.89 × 3,133.69
4. Step 4: Simplify right side
   8,681.07x = 40,797,144.61
5. Step 5: Solve for x
   x = 40,797,144.61/8,681.07
6. Step 6: Final answer
   x = 4,699.55