Finding the Fourth Proportional to 13,055.38, 18,017.34 and 7,390.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,055.38 : 18,017.34 = 7,390.16 : x
2. Step 2: Convert to fraction form
   13,055.38/18,017.34 = 7,390.16/x
3. Step 3: Cross multiply
   13,055.38x = 18,017.34 × 7,390.16
4. Step 4: Simplify right side
   13,055.38x = 133,151,025.37
5. Step 5: Solve for x
   x = 133,151,025.37/13,055.38
6. Step 6: Final answer
   x = 10,198.94