Finding the Fourth Proportional to 13,351.18, 18,424.30 and 7,382.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,351.18 : 18,424.30 = 7,382.69 : x
2. Step 2: Convert to fraction form
   13,351.18/18,424.30 = 7,382.69/x
3. Step 3: Cross multiply
   13,351.18x = 18,424.30 × 7,382.69
4. Step 4: Simplify right side
   13,351.18x = 136,020,895.37
5. Step 5: Solve for x
   x = 136,020,895.37/13,351.18
6. Step 6: Final answer
   x = 10,187.93