Finding the Fourth Proportional to 9,639.59, 13,301.56 and 5,447.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,639.59 : 13,301.56 = 5,447.84 : x
2. Step 2: Convert to fraction form
   9,639.59/13,301.56 = 5,447.84/x
3. Step 3: Cross multiply
   9,639.59x = 13,301.56 × 5,447.84
4. Step 4: Simplify right side
   9,639.59x = 72,464,770.63
5. Step 5: Solve for x
   x = 72,464,770.63/9,639.59
6. Step 6: Final answer
   x = 7,517.41