Finding the Fourth Proportional to 11,390.29, 17,085.33 and 3,599.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,390.29 : 17,085.33 = 3,599.10 : x
2. Step 2: Convert to fraction form
   11,390.29/17,085.33 = 3,599.10/x
3. Step 3: Cross multiply
   11,390.29x = 17,085.33 × 3,599.10
4. Step 4: Simplify right side
   11,390.29x = 61,491,793.21
5. Step 5: Solve for x
   x = 61,491,793.21/11,390.29
6. Step 6: Final answer
   x = 5,398.62