Finding the Fourth Proportional to 8,662.32, 12,986.80 and 5,881.68

Step by Step Solution

1. Step 1: Write the proportion equation
   8,662.32 : 12,986.80 = 5,881.68 : x
2. Step 2: Convert to fraction form
   8,662.32/12,986.80 = 5,881.68/x
3. Step 3: Cross multiply
   8,662.32x = 12,986.80 × 5,881.68
4. Step 4: Simplify right side
   8,662.32x = 76,384,201.82
5. Step 5: Solve for x
   x = 76,384,201.82/8,662.32
6. Step 6: Final answer
   x = 8,817.98