Finding the Fourth Proportional to 12,146.82, 18,216.15 and 4,648.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,146.82 : 18,216.15 = 4,648.62 : x
2. Step 2: Convert to fraction form
   12,146.82/18,216.15 = 4,648.62/x
3. Step 3: Cross multiply
   12,146.82x = 18,216.15 × 4,648.62
4. Step 4: Simplify right side
   12,146.82x = 84,680,010.09
5. Step 5: Solve for x
   x = 84,680,010.09/12,146.82
6. Step 6: Final answer
   x = 6,971.37