Finding the Fourth Proportional to 9,429.18, 13,011.69 and 5,449.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,429.18 : 13,011.69 = 5,449.45 : x
2. Step 2: Convert to fraction form
   9,429.18/13,011.69 = 5,449.45/x
3. Step 3: Cross multiply
   9,429.18x = 13,011.69 × 5,449.45
4. Step 4: Simplify right side
   9,429.18x = 70,906,554.07
5. Step 5: Solve for x
   x = 70,906,554.07/9,429.18
6. Step 6: Final answer
   x = 7,519.91