Finding the Fourth Proportional to 9,969.49, 13,756.63 and 5,720.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,969.49 : 13,756.63 = 5,720.73 : x
2. Step 2: Convert to fraction form
   9,969.49/13,756.63 = 5,720.73/x
3. Step 3: Cross multiply
   9,969.49x = 13,756.63 × 5,720.73
4. Step 4: Simplify right side
   9,969.49x = 78,697,993.81
5. Step 5: Solve for x
   x = 78,697,993.81/9,969.49
6. Step 6: Final answer
   x = 7,893.88