Finding the Fourth Proportional to 11,826.98, 17,736.12 and 3,928.06

Step by Step Solution

1. Step 1: Write the proportion equation
   11,826.98 : 17,736.12 = 3,928.06 : x
2. Step 2: Convert to fraction form
   11,826.98/17,736.12 = 3,928.06/x
3. Step 3: Cross multiply
   11,826.98x = 17,736.12 × 3,928.06
4. Step 4: Simplify right side
   11,826.98x = 69,668,435.21
5. Step 5: Solve for x
   x = 69,668,435.21/11,826.98
6. Step 6: Final answer
   x = 5,890.64