Finding the Fourth Proportional to 8,971.66, 12,380.50 and 5,987.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,971.66 : 12,380.50 = 5,987.10 : x
2. Step 2: Convert to fraction form
   8,971.66/12,380.50 = 5,987.10/x
3. Step 3: Cross multiply
   8,971.66x = 12,380.50 × 5,987.10
4. Step 4: Simplify right side
   8,971.66x = 74,123,291.55
5. Step 5: Solve for x
   x = 74,123,291.55/8,971.66
6. Step 6: Final answer
   x = 8,261.94