Finding the Fourth Proportional to 9,631.91, 13,290.72 and 5,382.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,631.91 : 13,290.72 = 5,382.43 : x
2. Step 2: Convert to fraction form
   9,631.91/13,290.72 = 5,382.43/x
3. Step 3: Cross multiply
   9,631.91x = 13,290.72 × 5,382.43
4. Step 4: Simplify right side
   9,631.91x = 71,536,370.05
5. Step 5: Solve for x
   x = 71,536,370.05/9,631.91
6. Step 6: Final answer
   x = 7,427.02