Finding the Fourth Proportional to 13,054.38, 18,013.23 and 7,677.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,054.38 : 18,013.23 = 7,677.06 : x
2. Step 2: Convert to fraction form
   13,054.38/18,013.23 = 7,677.06/x
3. Step 3: Cross multiply
   13,054.38x = 18,013.23 × 7,677.06
4. Step 4: Simplify right side
   13,054.38x = 138,288,647.50
5. Step 5: Solve for x
   x = 138,288,647.50/13,054.38
6. Step 6: Final answer
   x = 10,593.28