Finding the Fourth Proportional to 9,630.44, 13,290.02 and 5,439.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,630.44 : 13,290.02 = 5,439.50 : x
2. Step 2: Convert to fraction form
   9,630.44/13,290.02 = 5,439.50/x
3. Step 3: Cross multiply
   9,630.44x = 13,290.02 × 5,439.50
4. Step 4: Simplify right side
   9,630.44x = 72,291,063.79
5. Step 5: Solve for x
   x = 72,291,063.79/9,630.44
6. Step 6: Final answer
   x = 7,506.52