Finding the Fourth Proportional to 9,431.09, 13,015.25 and 5,453.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,431.09 : 13,015.25 = 5,453.45 : x
2. Step 2: Convert to fraction form
   9,431.09/13,015.25 = 5,453.45/x
3. Step 3: Cross multiply
   9,431.09x = 13,015.25 × 5,453.45
4. Step 4: Simplify right side
   9,431.09x = 70,977,987.85
5. Step 5: Solve for x
   x = 70,977,987.85/9,431.09
6. Step 6: Final answer
   x = 7,525.96