Finding the Fourth Proportional to 9,765.86, 13,476.89 and 5,289.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,765.86 : 13,476.89 = 5,289.62 : x
2. Step 2: Convert to fraction form
   9,765.86/13,476.89 = 5,289.62/x
3. Step 3: Cross multiply
   9,765.86x = 13,476.89 × 5,289.62
4. Step 4: Simplify right side
   9,765.86x = 71,287,533.05
5. Step 5: Solve for x
   x = 71,287,533.05/9,765.86
6. Step 6: Final answer
   x = 7,299.67