Finding the Fourth Proportional to 11,118.56, 16,681.28 and 4,545.27

Step by Step Solution

1. Step 1: Write the proportion equation
   11,118.56 : 16,681.28 = 4,545.27 : x
2. Step 2: Convert to fraction form
   11,118.56/16,681.28 = 4,545.27/x
3. Step 3: Cross multiply
   11,118.56x = 16,681.28 × 4,545.27
4. Step 4: Simplify right side
   11,118.56x = 75,820,898.82
5. Step 5: Solve for x
   x = 75,820,898.82/11,118.56
6. Step 6: Final answer
   x = 6,819.31