Finding the Fourth Proportional to 9,859.61, 14,791.50 and 2,839.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,859.61 : 14,791.50 = 2,839.56 : x
2. Step 2: Convert to fraction form
   9,859.61/14,791.50 = 2,839.56/x
3. Step 3: Cross multiply
   9,859.61x = 14,791.50 × 2,839.56
4. Step 4: Simplify right side
   9,859.61x = 42,001,351.74
5. Step 5: Solve for x
   x = 42,001,351.74/9,859.61
6. Step 6: Final answer
   x = 4,259.94