Finding the Fourth Proportional to 9,764.81, 14,649.72 and 2,839.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,764.81 : 14,649.72 = 2,839.31 : x
2. Step 2: Convert to fraction form
   9,764.81/14,649.72 = 2,839.31/x
3. Step 3: Cross multiply
   9,764.81x = 14,649.72 × 2,839.31
4. Step 4: Simplify right side
   9,764.81x = 41,595,122.47
5. Step 5: Solve for x
   x = 41,595,122.47/9,764.81
6. Step 6: Final answer
   x = 4,259.69