Finding the Fourth Proportional to 9,720.82, 13,411.38 and 5,471.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,720.82 : 13,411.38 = 5,471.02 : x
2. Step 2: Convert to fraction form
   9,720.82/13,411.38 = 5,471.02/x
3. Step 3: Cross multiply
   9,720.82x = 13,411.38 × 5,471.02
4. Step 4: Simplify right side
   9,720.82x = 73,373,928.21
5. Step 5: Solve for x
   x = 73,373,928.21/9,720.82
6. Step 6: Final answer
   x = 7,548.12