Finding the Fourth Proportional to 14,665.78, 21,998.25 and 7,065.35

Step by Step Solution

1. Step 1: Write the proportion equation
   14,665.78 : 21,998.25 = 7,065.35 : x
2. Step 2: Convert to fraction form
   14,665.78/21,998.25 = 7,065.35/x
3. Step 3: Cross multiply
   14,665.78x = 21,998.25 × 7,065.35
4. Step 4: Simplify right side
   14,665.78x = 155,425,190.32
5. Step 5: Solve for x
   x = 155,425,190.32/14,665.78
6. Step 6: Final answer
   x = 10,597.82