Finding the Fourth Proportional to 9,967.14, 13,754.17 and 5,490.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,967.14 : 13,754.17 = 5,490.78 : x
2. Step 2: Convert to fraction form
   9,967.14/13,754.17 = 5,490.78/x
3. Step 3: Cross multiply
   9,967.14x = 13,754.17 × 5,490.78
4. Step 4: Simplify right side
   9,967.14x = 75,521,121.55
5. Step 5: Solve for x
   x = 75,521,121.55/9,967.14
6. Step 6: Final answer
   x = 7,577.01