Finding the Fourth Proportional to 9,963.39, 13,747.46 and 7,572.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,963.39 : 13,747.46 = 7,572.72 : x
2. Step 2: Convert to fraction form
   9,963.39/13,747.46 = 7,572.72/x
3. Step 3: Cross multiply
   9,963.39x = 13,747.46 × 7,572.72
4. Step 4: Simplify right side
   9,963.39x = 104,105,721.58
5. Step 5: Solve for x
   x = 104,105,721.58/9,963.39
6. Step 6: Final answer
   x = 10,448.83