Finding the Fourth Proportional to 9,805.05, 14,706.72 and 2,784.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,805.05 : 14,706.72 = 2,784.78 : x
2. Step 2: Convert to fraction form
   9,805.05/14,706.72 = 2,784.78/x
3. Step 3: Cross multiply
   9,805.05x = 14,706.72 × 2,784.78
4. Step 4: Simplify right side
   9,805.05x = 40,954,979.72
5. Step 5: Solve for x
   x = 40,954,979.72/9,805.05
6. Step 6: Final answer
   x = 4,176.93