Finding the Fourth Proportional to 12,321.79, 18,483.01 and 3,556.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,321.79 : 18,483.01 = 3,556.69 : x
2. Step 2: Convert to fraction form
   12,321.79/18,483.01 = 3,556.69/x
3. Step 3: Cross multiply
   12,321.79x = 18,483.01 × 3,556.69
4. Step 4: Simplify right side
   12,321.79x = 65,738,281.74
5. Step 5: Solve for x
   x = 65,738,281.74/12,321.79
6. Step 6: Final answer
   x = 5,335.13