Finding the Fourth Proportional to 9,842.72, 14,762.05 and 2,821.17

Step by Step Solution

1. Step 1: Write the proportion equation
   9,842.72 : 14,762.05 = 2,821.17 : x
2. Step 2: Convert to fraction form
   9,842.72/14,762.05 = 2,821.17/x
3. Step 3: Cross multiply
   9,842.72x = 14,762.05 × 2,821.17
4. Step 4: Simplify right side
   9,842.72x = 41,646,286.17
5. Step 5: Solve for x
   x = 41,646,286.17/9,842.72
6. Step 6: Final answer
   x = 4,231.18