Finding the Fourth Proportional to 9,967.71, 13,754.86 and 5,490.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,967.71 : 13,754.86 = 5,490.59 : x
2. Step 2: Convert to fraction form
   9,967.71/13,754.86 = 5,490.59/x
3. Step 3: Cross multiply
   9,967.71x = 13,754.86 × 5,490.59
4. Step 4: Simplify right side
   9,967.71x = 75,522,245.15
5. Step 5: Solve for x
   x = 75,522,245.15/9,967.71
6. Step 6: Final answer
   x = 7,576.69