Finding the Fourth Proportional to 9,648.70, 13,315.82 and 5,400.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,648.70 : 13,315.82 = 5,400.25 : x
2. Step 2: Convert to fraction form
   9,648.70/13,315.82 = 5,400.25/x
3. Step 3: Cross multiply
   9,648.70x = 13,315.82 × 5,400.25
4. Step 4: Simplify right side
   9,648.70x = 71,908,696.66
5. Step 5: Solve for x
   x = 71,908,696.66/9,648.70
6. Step 6: Final answer
   x = 7,452.68