Finding the Fourth Proportional to 14,118.72, 21,193.41 and 10,618.71

Step by Step Solution

1. Step 1: Write the proportion equation
   14,118.72 : 21,193.41 = 10,618.71 : x
2. Step 2: Convert to fraction form
   14,118.72/21,193.41 = 10,618.71/x
3. Step 3: Cross multiply
   14,118.72x = 21,193.41 × 10,618.71
4. Step 4: Simplify right side
   14,118.72x = 225,046,674.70
5. Step 5: Solve for x
   x = 225,046,674.70/14,118.72
6. Step 6: Final answer
   x = 15,939.59