Finding the Fourth Proportional to 9,549.86, 13,179.60 and 5,571.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,549.86 : 13,179.60 = 5,571.23 : x
2. Step 2: Convert to fraction form
   9,549.86/13,179.60 = 5,571.23/x
3. Step 3: Cross multiply
   9,549.86x = 13,179.60 × 5,571.23
4. Step 4: Simplify right side
   9,549.86x = 73,426,517.01
5. Step 5: Solve for x
   x = 73,426,517.01/9,549.86
6. Step 6: Final answer
   x = 7,688.76