Finding the Fourth Proportional to 12,671.10, 18,996.38 and 5,281.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,671.10 : 18,996.38 = 5,281.10 : x
2. Step 2: Convert to fraction form
   12,671.10/18,996.38 = 5,281.10/x
3. Step 3: Cross multiply
   12,671.10x = 18,996.38 × 5,281.10
4. Step 4: Simplify right side
   12,671.10x = 100,321,782.42
5. Step 5: Solve for x
   x = 100,321,782.42/12,671.10
6. Step 6: Final answer
   x = 7,917.37