Finding the Fourth Proportional to 11,870.16, 17,805.68 and 3,550.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.16 : 17,805.68 = 3,550.28 : x
2. Step 2: Convert to fraction form
   11,870.16/17,805.68 = 3,550.28/x
3. Step 3: Cross multiply
   11,870.16x = 17,805.68 × 3,550.28
4. Step 4: Simplify right side
   11,870.16x = 63,215,149.59
5. Step 5: Solve for x
   x = 63,215,149.59/11,870.16
6. Step 6: Final answer
   x = 5,325.55