Finding the Fourth Proportional to 10,989.95, 16,488.56 and 7,306.67

Step by Step Solution

1. Step 1: Write the proportion equation
   10,989.95 : 16,488.56 = 7,306.67 : x
2. Step 2: Convert to fraction form
   10,989.95/16,488.56 = 7,306.67/x
3. Step 3: Cross multiply
   10,989.95x = 16,488.56 × 7,306.67
4. Step 4: Simplify right side
   10,989.95x = 120,476,526.18
5. Step 5: Solve for x
   x = 120,476,526.18/10,989.95
6. Step 6: Final answer
   x = 10,962.43