Finding the Fourth Proportional to 8,859.29, 13,279.82 and 3,931.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,859.29 : 13,279.82 = 3,931.25 : x
2. Step 2: Convert to fraction form
   8,859.29/13,279.82 = 3,931.25/x
3. Step 3: Cross multiply
   8,859.29x = 13,279.82 × 3,931.25
4. Step 4: Simplify right side
   8,859.29x = 52,206,292.38
5. Step 5: Solve for x
   x = 52,206,292.38/8,859.29
6. Step 6: Final answer
   x = 5,892.83