Finding the Fourth Proportional to 9,630.84, 13,290.39 and 5,381.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,630.84 : 13,290.39 = 5,381.63 : x
2. Step 2: Convert to fraction form
   9,630.84/13,290.39 = 5,381.63/x
3. Step 3: Cross multiply
   9,630.84x = 13,290.39 × 5,381.63
4. Step 4: Simplify right side
   9,630.84x = 71,523,895.08
5. Step 5: Solve for x
   x = 71,523,895.08/9,630.84
6. Step 6: Final answer
   x = 7,426.55