Finding the Fourth Proportional to 9,768.47, 13,480.56 and 7,526.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,768.47 : 13,480.56 = 7,526.25 : x
2. Step 2: Convert to fraction form
   9,768.47/13,480.56 = 7,526.25/x
3. Step 3: Cross multiply
   9,768.47x = 13,480.56 × 7,526.25
4. Step 4: Simplify right side
   9,768.47x = 101,458,064.70
5. Step 5: Solve for x
   x = 101,458,064.70/9,768.47
6. Step 6: Final answer
   x = 10,386.29