Finding the Fourth Proportional to 9,967.49, 13,754.42 and 5,490.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,967.49 : 13,754.42 = 5,490.98 : x
2. Step 2: Convert to fraction form
   9,967.49/13,754.42 = 5,490.98/x
3. Step 3: Cross multiply
   9,967.49x = 13,754.42 × 5,490.98
4. Step 4: Simplify right side
   9,967.49x = 75,525,245.13
5. Step 5: Solve for x
   x = 75,525,245.13/9,967.49
6. Step 6: Final answer
   x = 7,577.16