Finding the Fourth Proportional to 9,429.83, 14,144.87 and 2,856.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,429.83 : 14,144.87 = 2,856.31 : x
2. Step 2: Convert to fraction form
   9,429.83/14,144.87 = 2,856.31/x
3. Step 3: Cross multiply
   9,429.83x = 14,144.87 × 2,856.31
4. Step 4: Simplify right side
   9,429.83x = 40,402,083.99
5. Step 5: Solve for x
   x = 40,402,083.99/9,429.83
6. Step 6: Final answer
   x = 4,284.50