Finding the Fourth Proportional to 11,389.94, 17,085.72 and 3,491.43

Step by Step Solution

1. Step 1: Write the proportion equation
   11,389.94 : 17,085.72 = 3,491.43 : x
2. Step 2: Convert to fraction form
   11,389.94/17,085.72 = 3,491.43/x
3. Step 3: Cross multiply
   11,389.94x = 17,085.72 × 3,491.43
4. Step 4: Simplify right side
   11,389.94x = 59,653,595.38
5. Step 5: Solve for x
   x = 59,653,595.38/11,389.94
6. Step 6: Final answer
   x = 5,237.40