Finding the Fourth Proportional to 12,185.32, 18,302.55 and 7,264.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,185.32 : 18,302.55 = 7,264.57 : x
2. Step 2: Convert to fraction form
   12,185.32/18,302.55 = 7,264.57/x
3. Step 3: Cross multiply
   12,185.32x = 18,302.55 × 7,264.57
4. Step 4: Simplify right side
   12,185.32x = 132,960,155.65
5. Step 5: Solve for x
   x = 132,960,155.65/12,185.32
6. Step 6: Final answer
   x = 10,911.50