Finding the Fourth Proportional to 12,974.36, 17,903.58 and 8,491.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,974.36 : 17,903.58 = 8,491.01 : x
2. Step 2: Convert to fraction form
   12,974.36/17,903.58 = 8,491.01/x
3. Step 3: Cross multiply
   12,974.36x = 17,903.58 × 8,491.01
4. Step 4: Simplify right side
   12,974.36x = 152,019,387.30
5. Step 5: Solve for x
   x = 152,019,387.30/12,974.36
6. Step 6: Final answer
   x = 11,716.91