Finding the Fourth Proportional to 12,357.85, 18,533.98 and 5,687.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,357.85 : 18,533.98 = 5,687.94 : x
2. Step 2: Convert to fraction form
   12,357.85/18,533.98 = 5,687.94/x
3. Step 3: Cross multiply
   12,357.85x = 18,533.98 × 5,687.94
4. Step 4: Simplify right side
   12,357.85x = 105,420,166.20
5. Step 5: Solve for x
   x = 105,420,166.20/12,357.85
6. Step 6: Final answer
   x = 8,530.62