Finding the Fourth Proportional to 8,371.06, 12,548.43 and 3,987.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,371.06 : 12,548.43 = 3,987.34 : x
2. Step 2: Convert to fraction form
   8,371.06/12,548.43 = 3,987.34/x
3. Step 3: Cross multiply
   8,371.06x = 12,548.43 × 3,987.34
4. Step 4: Simplify right side
   8,371.06x = 50,034,856.88
5. Step 5: Solve for x
   x = 50,034,856.88/8,371.06
6. Step 6: Final answer
   x = 5,977.12