Finding the Fourth Proportional to 9,864.54, 14,796.78 and 3,290.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,864.54 : 14,796.78 = 3,290.28 : x
2. Step 2: Convert to fraction form
   9,864.54/14,796.78 = 3,290.28/x
3. Step 3: Cross multiply
   9,864.54x = 14,796.78 × 3,290.28
4. Step 4: Simplify right side
   9,864.54x = 48,685,549.30
5. Step 5: Solve for x
   x = 48,685,549.30/9,864.54
6. Step 6: Final answer
   x = 4,935.41