Finding the Fourth Proportional to 14,279.73, 21,380.72 and 11,106.15

Step by Step Solution

1. Step 1: Write the proportion equation
   14,279.73 : 21,380.72 = 11,106.15 : x
2. Step 2: Convert to fraction form
   14,279.73/21,380.72 = 11,106.15/x
3. Step 3: Cross multiply
   14,279.73x = 21,380.72 × 11,106.15
4. Step 4: Simplify right side
   14,279.73x = 237,457,427.90
5. Step 5: Solve for x
   x = 237,457,427.90/14,279.73
6. Step 6: Final answer
   x = 16,628.99