Finding the Fourth Proportional to 9,967.24, 13,754.78 and 5,490.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,967.24 : 13,754.78 = 5,490.99 : x
2. Step 2: Convert to fraction form
   9,967.24/13,754.78 = 5,490.99/x
3. Step 3: Cross multiply
   9,967.24x = 13,754.78 × 5,490.99
4. Step 4: Simplify right side
   9,967.24x = 75,527,352.57
5. Step 5: Solve for x
   x = 75,527,352.57/9,967.24
6. Step 6: Final answer
   x = 7,577.56