Finding the Fourth Proportional to 13,169.94, 18,176.18 and 7,506.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,169.94 : 18,176.18 = 7,506.72 : x
2. Step 2: Convert to fraction form
   13,169.94/18,176.18 = 7,506.72/x
3. Step 3: Cross multiply
   13,169.94x = 18,176.18 × 7,506.72
4. Step 4: Simplify right side
   13,169.94x = 136,443,456.40
5. Step 5: Solve for x
   x = 136,443,456.40/13,169.94
6. Step 6: Final answer
   x = 10,360.22