Finding the Fourth Proportional to 9,089.50, 12,545.55 and 5,554.77

Step by Step Solution

1. Step 1: Write the proportion equation
   9,089.50 : 12,545.55 = 5,554.77 : x
2. Step 2: Convert to fraction form
   9,089.50/12,545.55 = 5,554.77/x
3. Step 3: Cross multiply
   9,089.50x = 12,545.55 × 5,554.77
4. Step 4: Simplify right side
   9,089.50x = 69,687,644.77
5. Step 5: Solve for x
   x = 69,687,644.77/9,089.50
6. Step 6: Final answer
   x = 7,666.83