Finding the Fourth Proportional to 10,047.56, 13,865.26 and 5,571.39

Step by Step Solution

1. Step 1: Write the proportion equation
   10,047.56 : 13,865.26 = 5,571.39 : x
2. Step 2: Convert to fraction form
   10,047.56/13,865.26 = 5,571.39/x
3. Step 3: Cross multiply
   10,047.56x = 13,865.26 × 5,571.39
4. Step 4: Simplify right side
   10,047.56x = 77,248,770.91
5. Step 5: Solve for x
   x = 77,248,770.91/10,047.56
6. Step 6: Final answer
   x = 7,688.31