Finding the Fourth Proportional to 9,765.98, 13,477.02 and 5,289.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,765.98 : 13,477.02 = 5,289.72 : x
2. Step 2: Convert to fraction form
   9,765.98/13,477.02 = 5,289.72/x
3. Step 3: Cross multiply
   9,765.98x = 13,477.02 × 5,289.72
4. Step 4: Simplify right side
   9,765.98x = 71,289,662.23
5. Step 5: Solve for x
   x = 71,289,662.23/9,765.98
6. Step 6: Final answer
   x = 7,299.80