Finding the Fourth Proportional to 9,955.50, 13,738.71 and 5,539.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,955.50 : 13,738.71 = 5,539.50 : x
2. Step 2: Convert to fraction form
   9,955.50/13,738.71 = 5,539.50/x
3. Step 3: Cross multiply
   9,955.50x = 13,738.71 × 5,539.50
4. Step 4: Simplify right side
   9,955.50x = 76,105,584.05
5. Step 5: Solve for x
   x = 76,105,584.05/9,955.50
6. Step 6: Final answer
   x = 7,644.58