Finding the Fourth Proportional to 9,962.88, 13,748.78 and 5,486.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,962.88 : 13,748.78 = 5,486.62 : x
2. Step 2: Convert to fraction form
   9,962.88/13,748.78 = 5,486.62/x
3. Step 3: Cross multiply
   9,962.88x = 13,748.78 × 5,486.62
4. Step 4: Simplify right side
   9,962.88x = 75,434,362.23
5. Step 5: Solve for x
   x = 75,434,362.23/9,962.88
6. Step 6: Final answer
   x = 7,571.54