Finding the Fourth Proportional to 10,342.78, 14,273.07 and 5,627.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,342.78 : 14,273.07 = 5,627.06 : x
2. Step 2: Convert to fraction form
   10,342.78/14,273.07 = 5,627.06/x
3. Step 3: Cross multiply
   10,342.78x = 14,273.07 × 5,627.06
4. Step 4: Simplify right side
   10,342.78x = 80,315,421.27
5. Step 5: Solve for x
   x = 80,315,421.27/10,342.78
6. Step 6: Final answer
   x = 7,765.36