Finding the Fourth Proportional to 12,166.32, 18,283.56 and 7,236.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,166.32 : 18,283.56 = 7,236.72 : x
2. Step 2: Convert to fraction form
   12,166.32/18,283.56 = 7,236.72/x
3. Step 3: Cross multiply
   12,166.32x = 18,283.56 × 7,236.72
4. Step 4: Simplify right side
   12,166.32x = 132,313,004.32
5. Step 5: Solve for x
   x = 132,313,004.32/12,166.32
6. Step 6: Final answer
   x = 10,875.35