Finding the Fourth Proportional to 9,385.43, 14,074.71 and 2,809.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,385.43 : 14,074.71 = 2,809.40 : x
2. Step 2: Convert to fraction form
   9,385.43/14,074.71 = 2,809.40/x
3. Step 3: Cross multiply
   9,385.43x = 14,074.71 × 2,809.40
4. Step 4: Simplify right side
   9,385.43x = 39,541,490.27
5. Step 5: Solve for x
   x = 39,541,490.27/9,385.43
6. Step 6: Final answer
   x = 4,213.07