Finding the Fourth Proportional to 9,962.76, 13,748.83 and 5,486.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,962.76 : 13,748.83 = 5,486.70 : x
2. Step 2: Convert to fraction form
   9,962.76/13,748.83 = 5,486.70/x
3. Step 3: Cross multiply
   9,962.76x = 13,748.83 × 5,486.70
4. Step 4: Simplify right side
   9,962.76x = 75,435,743.40
5. Step 5: Solve for x
   x = 75,435,743.40/9,962.76
6. Step 6: Final answer
   x = 7,571.77