Finding the Fourth Proportional to 10,272.78, 15,406.08 and 5,339.73

Step by Step Solution

1. Step 1: Write the proportion equation
   10,272.78 : 15,406.08 = 5,339.73 : x
2. Step 2: Convert to fraction form
   10,272.78/15,406.08 = 5,339.73/x
3. Step 3: Cross multiply
   10,272.78x = 15,406.08 × 5,339.73
4. Step 4: Simplify right side
   10,272.78x = 82,264,307.56
5. Step 5: Solve for x
   x = 82,264,307.56/10,272.78
6. Step 6: Final answer
   x = 8,007.99