Finding the Fourth Proportional to 9,630.72, 13,290.24 and 5,381.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,630.72 : 13,290.24 = 5,381.84 : x
2. Step 2: Convert to fraction form
   9,630.72/13,290.24 = 5,381.84/x
3. Step 3: Cross multiply
   9,630.72x = 13,290.24 × 5,381.84
4. Step 4: Simplify right side
   9,630.72x = 71,525,945.24
5. Step 5: Solve for x
   x = 71,525,945.24/9,630.72
6. Step 6: Final answer
   x = 7,426.85