Finding the Fourth Proportional to 10,949.13, 16,426.28 and 3,553.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,949.13 : 16,426.28 = 3,553.57 : x
2. Step 2: Convert to fraction form
   10,949.13/16,426.28 = 3,553.57/x
3. Step 3: Cross multiply
   10,949.13x = 16,426.28 × 3,553.57
4. Step 4: Simplify right side
   10,949.13x = 58,371,935.82
5. Step 5: Solve for x
   x = 58,371,935.82/10,949.13
6. Step 6: Final answer
   x = 5,331.19