Finding the Fourth Proportional to 13,673.94, 18,870.05 and 7,386.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,673.94 : 18,870.05 = 7,386.32 : x
2. Step 2: Convert to fraction form
   13,673.94/18,870.05 = 7,386.32/x
3. Step 3: Cross multiply
   13,673.94x = 18,870.05 × 7,386.32
4. Step 4: Simplify right side
   13,673.94x = 139,380,133.37
5. Step 5: Solve for x
   x = 139,380,133.37/13,673.94
6. Step 6: Final answer
   x = 10,193.12