Finding the Fourth Proportional to 13,083.78, 18,055.24 and 7,419.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,083.78 : 18,055.24 = 7,419.06 : x
2. Step 2: Convert to fraction form
   13,083.78/18,055.24 = 7,419.06/x
3. Step 3: Cross multiply
   13,083.78x = 18,055.24 × 7,419.06
4. Step 4: Simplify right side
   13,083.78x = 133,952,908.87
5. Step 5: Solve for x
   x = 133,952,908.87/13,083.78
6. Step 6: Final answer
   x = 10,238.09