Finding the Fourth Proportional to 9,955.67, 13,738.72 and 5,479.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,955.67 : 13,738.72 = 5,479.32 : x
2. Step 2: Convert to fraction form
   9,955.67/13,738.72 = 5,479.32/x
3. Step 3: Cross multiply
   9,955.67x = 13,738.72 × 5,479.32
4. Step 4: Simplify right side
   9,955.67x = 75,278,872.51
5. Step 5: Solve for x
   x = 75,278,872.51/9,955.67
6. Step 6: Final answer
   x = 7,561.41