Finding the Fourth Proportional to 11,426.24, 17,139.18 and 3,528.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,426.24 : 17,139.18 = 3,528.56 : x
2. Step 2: Convert to fraction form
   11,426.24/17,139.18 = 3,528.56/x
3. Step 3: Cross multiply
   11,426.24x = 17,139.18 × 3,528.56
4. Step 4: Simplify right side
   11,426.24x = 60,476,624.98
5. Step 5: Solve for x
   x = 60,476,624.98/11,426.24
6. Step 6: Final answer
   x = 5,292.78