Finding the Fourth Proportional to 13,411.17, 18,504.72 and 8,106.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,411.17 : 18,504.72 = 8,106.29 : x
2. Step 2: Convert to fraction form
   13,411.17/18,504.72 = 8,106.29/x
3. Step 3: Cross multiply
   13,411.17x = 18,504.72 × 8,106.29
4. Step 4: Simplify right side
   13,411.17x = 150,004,534.17
5. Step 5: Solve for x
   x = 150,004,534.17/13,411.17
6. Step 6: Final answer
   x = 11,185.04