Finding the Fourth Proportional to 12,534.72, 18,804.24 and 4,215.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,534.72 : 18,804.24 = 4,215.54 : x
2. Step 2: Convert to fraction form
   12,534.72/18,804.24 = 4,215.54/x
3. Step 3: Cross multiply
   12,534.72x = 18,804.24 × 4,215.54
4. Step 4: Simplify right side
   12,534.72x = 79,270,025.89
5. Step 5: Solve for x
   x = 79,270,025.89/12,534.72
6. Step 6: Final answer
   x = 6,324.04