Finding the Fourth Proportional to 13,674.50, 18,870.82 and 7,386.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,674.50 : 18,870.82 = 7,386.88 : x
2. Step 2: Convert to fraction form
   13,674.50/18,870.82 = 7,386.88/x
3. Step 3: Cross multiply
   13,674.50x = 18,870.82 × 7,386.88
4. Step 4: Simplify right side
   13,674.50x = 139,396,482.84
5. Step 5: Solve for x
   x = 139,396,482.84/13,674.50
6. Step 6: Final answer
   x = 10,193.90