Finding the Fourth Proportional to 9,630.09, 13,289.27 and 5,380.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,630.09 : 13,289.27 = 5,380.88 : x
2. Step 2: Convert to fraction form
   9,630.09/13,289.27 = 5,380.88/x
3. Step 3: Cross multiply
   9,630.09x = 13,289.27 × 5,380.88
4. Step 4: Simplify right side
   9,630.09x = 71,507,873.81
5. Step 5: Solve for x
   x = 71,507,873.81/9,630.09
6. Step 6: Final answer
   x = 7,425.46