Finding the Fourth Proportional to 14,404.78, 21,605.35 and 5,645.85

Step by Step Solution

1. Step 1: Write the proportion equation
   14,404.78 : 21,605.35 = 5,645.85 : x
2. Step 2: Convert to fraction form
   14,404.78/21,605.35 = 5,645.85/x
3. Step 3: Cross multiply
   14,404.78x = 21,605.35 × 5,645.85
4. Step 4: Simplify right side
   14,404.78x = 121,980,565.30
5. Step 5: Solve for x
   x = 121,980,565.30/14,404.78
6. Step 6: Final answer
   x = 8,468.06