Finding the Fourth Proportional to 10,047.39, 13,865.33 and 5,571.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,047.39 : 13,865.33 = 5,571.15 : x
2. Step 2: Convert to fraction form
   10,047.39/13,865.33 = 5,571.15/x
3. Step 3: Cross multiply
   10,047.39x = 13,865.33 × 5,571.15
4. Step 4: Simplify right side
   10,047.39x = 77,245,763.90
5. Step 5: Solve for x
   x = 77,245,763.90/10,047.39
6. Step 6: Final answer
   x = 7,688.14