Finding the Fourth Proportional to 12,401.69, 17,107.13 and 8,153.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,401.69 : 17,107.13 = 8,153.51 : x
2. Step 2: Convert to fraction form
   12,401.69/17,107.13 = 8,153.51/x
3. Step 3: Cross multiply
   12,401.69x = 17,107.13 × 8,153.51
4. Step 4: Simplify right side
   12,401.69x = 139,483,090.37
5. Step 5: Solve for x
   x = 139,483,090.37/12,401.69
6. Step 6: Final answer
   x = 11,247.11