Finding the Fourth Proportional to 12,648.12, 18,977.94 and 5,254.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,648.12 : 18,977.94 = 5,254.23 : x
2. Step 2: Convert to fraction form
   12,648.12/18,977.94 = 5,254.23/x
3. Step 3: Cross multiply
   12,648.12x = 18,977.94 × 5,254.23
4. Step 4: Simplify right side
   12,648.12x = 99,714,461.69
5. Step 5: Solve for x
   x = 99,714,461.69/12,648.12
6. Step 6: Final answer
   x = 7,883.74