Finding the Fourth Proportional to 9,859.67, 14,789.22 and 2,839.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,859.67 : 14,789.22 = 2,839.71 : x
2. Step 2: Convert to fraction form
   9,859.67/14,789.22 = 2,839.71/x
3. Step 3: Cross multiply
   9,859.67x = 14,789.22 × 2,839.71
4. Step 4: Simplify right side
   9,859.67x = 41,997,095.93
5. Step 5: Solve for x
   x = 41,997,095.93/9,859.67
6. Step 6: Final answer
   x = 4,259.48