Finding the Fourth Proportional to 11,603.12, 17,401.56 and 3,281.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,603.12 : 17,401.56 = 3,281.18 : x
2. Step 2: Convert to fraction form
   11,603.12/17,401.56 = 3,281.18/x
3. Step 3: Cross multiply
   11,603.12x = 17,401.56 × 3,281.18
4. Step 4: Simplify right side
   11,603.12x = 57,097,563.63
5. Step 5: Solve for x
   x = 57,097,563.63/11,603.12
6. Step 6: Final answer
   x = 4,920.88