Finding the Fourth Proportional to 12,488.80, 18,735.64 and 3,723.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488.80 : 18,735.64 = 3,723.52 : x
2. Step 2: Convert to fraction form
   12,488.80/18,735.64 = 3,723.52/x
3. Step 3: Cross multiply
   12,488.80x = 18,735.64 × 3,723.52
4. Step 4: Simplify right side
   12,488.80x = 69,762,530.25
5. Step 5: Solve for x
   x = 69,762,530.25/12,488.80
6. Step 6: Final answer
   x = 5,586.01