Finding the Fourth Proportional to 11,870.13, 17,805 and 3,550.17

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.13 : 17,805 = 3,550.17 : x
2. Step 2: Convert to fraction form
   11,870.13/17,805 = 3,550.17/x
3. Step 3: Cross multiply
   11,870.13x = 17,805 × 3,550.17
4. Step 4: Simplify right side
   11,870.13x = 63,210,776.85
5. Step 5: Solve for x
   x = 63,210,776.85/11,870.13
6. Step 6: Final answer
   x = 5,325.20