Finding the Fourth Proportional to 9,721.07, 13,411.72 and 5,471.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,721.07 : 13,411.72 = 5,471.27 : x
2. Step 2: Convert to fraction form
   9,721.07/13,411.72 = 5,471.27/x
3. Step 3: Cross multiply
   9,721.07x = 13,411.72 × 5,471.27
4. Step 4: Simplify right side
   9,721.07x = 73,379,141.28
5. Step 5: Solve for x
   x = 73,379,141.28/9,721.07
6. Step 6: Final answer
   x = 7,548.46