Finding the Fourth Proportional to 14,456.76, 21,667.88 and 7,440.14

Step by Step Solution

1. Step 1: Write the proportion equation
   14,456.76 : 21,667.88 = 7,440.14 : x
2. Step 2: Convert to fraction form
   14,456.76/21,667.88 = 7,440.14/x
3. Step 3: Cross multiply
   14,456.76x = 21,667.88 × 7,440.14
4. Step 4: Simplify right side
   14,456.76x = 161,212,060.70
5. Step 5: Solve for x
   x = 161,212,060.70/14,456.76
6. Step 6: Final answer
   x = 11,151.33