Finding the Fourth Proportional to 12,556.76, 18,832.72 and 3,789.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,556.76 : 18,832.72 = 3,789.64 : x
2. Step 2: Convert to fraction form
   12,556.76/18,832.72 = 3,789.64/x
3. Step 3: Cross multiply
   12,556.76x = 18,832.72 × 3,789.64
4. Step 4: Simplify right side
   12,556.76x = 71,369,229.02
5. Step 5: Solve for x
   x = 71,369,229.02/12,556.76
6. Step 6: Final answer
   x = 5,683.73