Finding the Fourth Proportional to 13,673.82, 18,869.88 and 7,386.20

Step by Step Solution

1. Step 1: Write the proportion equation
   13,673.82 : 18,869.88 = 7,386.20 : x
2. Step 2: Convert to fraction form
   13,673.82/18,869.88 = 7,386.20/x
3. Step 3: Cross multiply
   13,673.82x = 18,869.88 × 7,386.20
4. Step 4: Simplify right side
   13,673.82x = 139,376,613.31
5. Step 5: Solve for x
   x = 139,376,613.31/13,673.82
6. Step 6: Final answer
   x = 10,192.95