Finding the Fourth Proportional to 11,404.80, 17,107.06 and 3,613.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,404.80 : 17,107.06 = 3,613.60 : x
2. Step 2: Convert to fraction form
   11,404.80/17,107.06 = 3,613.60/x
3. Step 3: Cross multiply
   11,404.80x = 17,107.06 × 3,613.60
4. Step 4: Simplify right side
   11,404.80x = 61,818,072.02
5. Step 5: Solve for x
   x = 61,818,072.02/11,404.80
6. Step 6: Final answer
   x = 5,420.36