Finding the Fourth Proportional to 14,667.88, 21,997.18 and 7,738.60

Step by Step Solution

1. Step 1: Write the proportion equation
   14,667.88 : 21,997.18 = 7,738.60 : x
2. Step 2: Convert to fraction form
   14,667.88/21,997.18 = 7,738.60/x
3. Step 3: Cross multiply
   14,667.88x = 21,997.18 × 7,738.60
4. Step 4: Simplify right side
   14,667.88x = 170,227,377.15
5. Step 5: Solve for x
   x = 170,227,377.15/14,667.88
6. Step 6: Final answer
   x = 11,605.45