Finding the Fourth Proportional to 8,971.16, 12,371.52 and 5,987.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,971.16 : 12,371.52 = 5,987.12 : x
2. Step 2: Convert to fraction form
   8,971.16/12,371.52 = 5,987.12/x
3. Step 3: Cross multiply
   8,971.16x = 12,371.52 × 5,987.12
4. Step 4: Simplify right side
   8,971.16x = 74,069,774.82
5. Step 5: Solve for x
   x = 74,069,774.82/8,971.16
6. Step 6: Final answer
   x = 8,256.43