Finding the Fourth Proportional to 9,962.13, 13,747.85 and 5,485.97

Step by Step Solution

1. Step 1: Write the proportion equation
   9,962.13 : 13,747.85 = 5,485.97 : x
2. Step 2: Convert to fraction form
   9,962.13/13,747.85 = 5,485.97/x
3. Step 3: Cross multiply
   9,962.13x = 13,747.85 × 5,485.97
4. Step 4: Simplify right side
   9,962.13x = 75,420,196.50
5. Step 5: Solve for x
   x = 75,420,196.50/9,962.13
6. Step 6: Final answer
   x = 7,570.69