Finding the Fourth Proportional to 12,556.86, 18,835.57 and 3,196.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,556.86 : 18,835.57 = 3,196.84 : x
2. Step 2: Convert to fraction form
   12,556.86/18,835.57 = 3,196.84/x
3. Step 3: Cross multiply
   12,556.86x = 18,835.57 × 3,196.84
4. Step 4: Simplify right side
   12,556.86x = 60,214,272.06
5. Step 5: Solve for x
   x = 60,214,272.06/12,556.86
6. Step 6: Final answer
   x = 4,795.33