Finding the Fourth Proportional to 9,955.34, 13,738.70 and 5,479.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,955.34 : 13,738.70 = 5,479.42 : x
2. Step 2: Convert to fraction form
   9,955.34/13,738.70 = 5,479.42/x
3. Step 3: Cross multiply
   9,955.34x = 13,738.70 × 5,479.42
4. Step 4: Simplify right side
   9,955.34x = 75,280,107.55
5. Step 5: Solve for x
   x = 75,280,107.55/9,955.34
6. Step 6: Final answer
   x = 7,561.78