Finding the Fourth Proportional to 13,105.38, 18,084.83 and 7,137.03

Step by Step Solution

1. Step 1: Write the proportion equation
   13,105.38 : 18,084.83 = 7,137.03 : x
2. Step 2: Convert to fraction form
   13,105.38/18,084.83 = 7,137.03/x
3. Step 3: Cross multiply
   13,105.38x = 18,084.83 × 7,137.03
4. Step 4: Simplify right side
   13,105.38x = 129,071,938.57
5. Step 5: Solve for x
   x = 129,071,938.57/13,105.38
6. Step 6: Final answer
   x = 9,848.77