Finding the Fourth Proportional to 9,962.56, 13,748.74 and 5,486.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,962.56 : 13,748.74 = 5,486.74 : x
2. Step 2: Convert to fraction form
   9,962.56/13,748.74 = 5,486.74/x
3. Step 3: Cross multiply
   9,962.56x = 13,748.74 × 5,486.74
4. Step 4: Simplify right side
   9,962.56x = 75,435,713.62
5. Step 5: Solve for x
   x = 75,435,713.62/9,962.56
6. Step 6: Final answer
   x = 7,571.92