Finding the Fourth Proportional to 9,955.53, 13,738.71 and 5,479.17

Step by Step Solution

1. Step 1: Write the proportion equation
   9,955.53 : 13,738.71 = 5,479.17 : x
2. Step 2: Convert to fraction form
   9,955.53/13,738.71 = 5,479.17/x
3. Step 3: Cross multiply
   9,955.53x = 13,738.71 × 5,479.17
4. Step 4: Simplify right side
   9,955.53x = 75,276,727.67
5. Step 5: Solve for x
   x = 75,276,727.67/9,955.53
6. Step 6: Final answer
   x = 7,561.30