Finding the Fourth Proportional to 12,546.31, 18,820.76 and 4,227.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,546.31 : 18,820.76 = 4,227.25 : x
2. Step 2: Convert to fraction form
   12,546.31/18,820.76 = 4,227.25/x
3. Step 3: Cross multiply
   12,546.31x = 18,820.76 × 4,227.25
4. Step 4: Simplify right side
   12,546.31x = 79,560,057.71
5. Step 5: Solve for x
   x = 79,560,057.71/12,546.31
6. Step 6: Final answer
   x = 6,341.31