Finding the Fourth Proportional to 10,953.07, 16,429.59 and 4,380.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,953.07 : 16,429.59 = 4,380.79 : x
2. Step 2: Convert to fraction form
   10,953.07/16,429.59 = 4,380.79/x
3. Step 3: Cross multiply
   10,953.07x = 16,429.59 × 4,380.79
4. Step 4: Simplify right side
   10,953.07x = 71,974,583.58
5. Step 5: Solve for x
   x = 71,974,583.58/10,953.07
6. Step 6: Final answer
   x = 6,571.18