Finding the Fourth Proportional to 11,613.62, 17,409.68 and 4,216.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,613.62 : 17,409.68 = 4,216.28 : x
2. Step 2: Convert to fraction form
   11,613.62/17,409.68 = 4,216.28/x
3. Step 3: Cross multiply
   11,613.62x = 17,409.68 × 4,216.28
4. Step 4: Simplify right side
   11,613.62x = 73,404,085.59
5. Step 5: Solve for x
   x = 73,404,085.59/11,613.62
6. Step 6: Final answer
   x = 6,320.52