Finding the Fourth Proportional to 9,631.72, 13,291.62 and 5,382.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,631.72 : 13,291.62 = 5,382.84 : x
2. Step 2: Convert to fraction form
   9,631.72/13,291.62 = 5,382.84/x
3. Step 3: Cross multiply
   9,631.72x = 13,291.62 × 5,382.84
4. Step 4: Simplify right side
   9,631.72x = 71,546,663.80
5. Step 5: Solve for x
   x = 71,546,663.80/9,631.72
6. Step 6: Final answer
   x = 7,428.23