Finding the Fourth Proportional to 12,146.32, 18,218.62 and 7,467.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,146.32 : 18,218.62 = 7,467.05 : x
2. Step 2: Convert to fraction form
   12,146.32/18,218.62 = 7,467.05/x
3. Step 3: Cross multiply
   12,146.32x = 18,218.62 × 7,467.05
4. Step 4: Simplify right side
   12,146.32x = 136,039,401.35
5. Step 5: Solve for x
   x = 136,039,401.35/12,146.32
6. Step 6: Final answer
   x = 11,200.05