Finding the Fourth Proportional to 9,639.09, 13,300.83 and 5,447.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,639.09 : 13,300.83 = 5,447.34 : x
2. Step 2: Convert to fraction form
   9,639.09/13,300.83 = 5,447.34/x
3. Step 3: Cross multiply
   9,639.09x = 13,300.83 × 5,447.34
4. Step 4: Simplify right side
   9,639.09x = 72,454,143.29
5. Step 5: Solve for x
   x = 72,454,143.29/9,639.09
6. Step 6: Final answer
   x = 7,516.70