Finding the Fourth Proportional to 9,859.73, 14,789.72 and 2,839.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,859.73 : 14,789.72 = 2,839.86 : x
2. Step 2: Convert to fraction form
   9,859.73/14,789.72 = 2,839.86/x
3. Step 3: Cross multiply
   9,859.73x = 14,789.72 × 2,839.86
4. Step 4: Simplify right side
   9,859.73x = 42,000,734.24
5. Step 5: Solve for x
   x = 42,000,734.24/9,859.73
6. Step 6: Final answer
   x = 4,259.83