Finding the Fourth Proportional to 9,761.50, 13,470.85 and 5,285.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,761.50 : 13,470.85 = 5,285.25 : x
2. Step 2: Convert to fraction form
   9,761.50/13,470.85 = 5,285.25/x
3. Step 3: Cross multiply
   9,761.50x = 13,470.85 × 5,285.25
4. Step 4: Simplify right side
   9,761.50x = 71,196,816.57
5. Step 5: Solve for x
   x = 71,196,816.57/9,761.50
6. Step 6: Final answer
   x = 7,293.63