Finding the Fourth Proportional to 10,857.25, 16,280.68 and 5,304.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,857.25 : 16,280.68 = 5,304.10 : x
2. Step 2: Convert to fraction form
   10,857.25/16,280.68 = 5,304.10/x
3. Step 3: Cross multiply
   10,857.25x = 16,280.68 × 5,304.10
4. Step 4: Simplify right side
   10,857.25x = 86,354,354.79
5. Step 5: Solve for x
   x = 86,354,354.79/10,857.25
6. Step 6: Final answer
   x = 7,953.61