Finding the Fourth Proportional to 10,047.91, 13,866.20 and 5,571.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,047.91 : 13,866.20 = 5,571.72 : x
2. Step 2: Convert to fraction form
   10,047.91/13,866.20 = 5,571.72/x
3. Step 3: Cross multiply
   10,047.91x = 13,866.20 × 5,571.72
4. Step 4: Simplify right side
   10,047.91x = 77,258,583.86
5. Step 5: Solve for x
   x = 77,258,583.86/10,047.91
6. Step 6: Final answer
   x = 7,689.02