Finding the Fourth Proportional to 14,447.94, 21,666.42 and 5,678.07

Step by Step Solution

1. Step 1: Write the proportion equation
   14,447.94 : 21,666.42 = 5,678.07 : x
2. Step 2: Convert to fraction form
   14,447.94/21,666.42 = 5,678.07/x
3. Step 3: Cross multiply
   14,447.94x = 21,666.42 × 5,678.07
4. Step 4: Simplify right side
   14,447.94x = 123,023,449.41
5. Step 5: Solve for x
   x = 123,023,449.41/14,447.94
6. Step 6: Final answer
   x = 8,514.95