Finding the Fourth Proportional to 10,475.94, 15,728.49 and 5,285.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,475.94 : 15,728.49 = 5,285.46 : x
2. Step 2: Convert to fraction form
   10,475.94/15,728.49 = 5,285.46/x
3. Step 3: Cross multiply
   10,475.94x = 15,728.49 × 5,285.46
4. Step 4: Simplify right side
   10,475.94x = 83,132,304.76
5. Step 5: Solve for x
   x = 83,132,304.76/10,475.94
6. Step 6: Final answer
   x = 7,935.55