Finding the Fourth Proportional to 9,667.98, 13,342.87 and 5,419.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,667.98 : 13,342.87 = 5,419.73 : x
2. Step 2: Convert to fraction form
   9,667.98/13,342.87 = 5,419.73/x
3. Step 3: Cross multiply
   9,667.98x = 13,342.87 × 5,419.73
4. Step 4: Simplify right side
   9,667.98x = 72,314,752.83
5. Step 5: Solve for x
   x = 72,314,752.83/9,667.98
6. Step 6: Final answer
   x = 7,479.82