Finding the Fourth Proportional to 10,342.91, 14,272.81 and 5,627.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,342.91 : 14,272.81 = 5,627.21 : x
2. Step 2: Convert to fraction form
   10,342.91/14,272.81 = 5,627.21/x
3. Step 3: Cross multiply
   10,342.91x = 14,272.81 × 5,627.21
4. Step 4: Simplify right side
   10,342.91x = 80,316,013.73
5. Step 5: Solve for x
   x = 80,316,013.73/10,342.91
6. Step 6: Final answer
   x = 7,765.32