Finding the Fourth Proportional to 9,429.36, 13,013.56 and 5,451.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,429.36 : 13,013.56 = 5,451.76 : x
2. Step 2: Convert to fraction form
   9,429.36/13,013.56 = 5,451.76/x
3. Step 3: Cross multiply
   9,429.36x = 13,013.56 × 5,451.76
4. Step 4: Simplify right side
   9,429.36x = 70,946,805.87
5. Step 5: Solve for x
   x = 70,946,805.87/9,429.36
6. Step 6: Final answer
   x = 7,524.03