Finding the Fourth Proportional to 12,469.86, 18,699.33 and 3,705.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,469.86 : 18,699.33 = 3,705.30 : x
2. Step 2: Convert to fraction form
   12,469.86/18,699.33 = 3,705.30/x
3. Step 3: Cross multiply
   12,469.86x = 18,699.33 × 3,705.30
4. Step 4: Simplify right side
   12,469.86x = 69,286,627.45
5. Step 5: Solve for x
   x = 69,286,627.45/12,469.86
6. Step 6: Final answer
   x = 5,556.33