Finding the Fourth Proportional to 9,431.79, 13,016.48 and 5,453.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,431.79 : 13,016.48 = 5,453.88 : x
2. Step 2: Convert to fraction form
   9,431.79/13,016.48 = 5,453.88/x
3. Step 3: Cross multiply
   9,431.79x = 13,016.48 × 5,453.88
4. Step 4: Simplify right side
   9,431.79x = 70,990,292.67
5. Step 5: Solve for x
   x = 70,990,292.67/9,431.79
6. Step 6: Final answer
   x = 7,526.70