Finding the Fourth Proportional to 9,531.38, 13,153.31 and 5,339.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,531.38 : 13,153.31 = 5,339.63 : x
2. Step 2: Convert to fraction form
   9,531.38/13,153.31 = 5,339.63/x
3. Step 3: Cross multiply
   9,531.38x = 13,153.31 × 5,339.63
4. Step 4: Simplify right side
   9,531.38x = 70,233,716.21
5. Step 5: Solve for x
   x = 70,233,716.21/9,531.38
6. Step 6: Final answer
   x = 7,368.69