Finding the Fourth Proportional to 13,306.53, 18,362.88 and 7,338.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,306.53 : 18,362.88 = 7,338.09 : x
2. Step 2: Convert to fraction form
   13,306.53/18,362.88 = 7,338.09/x
3. Step 3: Cross multiply
   13,306.53x = 18,362.88 × 7,338.09
4. Step 4: Simplify right side
   13,306.53x = 134,748,466.10
5. Step 5: Solve for x
   x = 134,748,466.10/13,306.53
6. Step 6: Final answer
   x = 10,126.49