Finding the Fourth Proportional to 9,967.28, 13,755.47 and 5,491.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,967.28 : 13,755.47 = 5,491.02 : x
2. Step 2: Convert to fraction form
   9,967.28/13,755.47 = 5,491.02/x
3. Step 3: Cross multiply
   9,967.28x = 13,755.47 × 5,491.02
4. Step 4: Simplify right side
   9,967.28x = 75,531,533.42
5. Step 5: Solve for x
   x = 75,531,533.42/9,967.28
6. Step 6: Final answer
   x = 7,577.95