Finding the Fourth Proportional to 12,659.56, 18,977.82 and 5,731.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,659.56 : 18,977.82 = 5,731.24 : x
2. Step 2: Convert to fraction form
   12,659.56/18,977.82 = 5,731.24/x
3. Step 3: Cross multiply
   12,659.56x = 18,977.82 × 5,731.24
4. Step 4: Simplify right side
   12,659.56x = 108,766,441.10
5. Step 5: Solve for x
   x = 108,766,441.10/12,659.56
6. Step 6: Final answer
   x = 8,591.64