Finding the Fourth Proportional to 12,965.58, 19,443.90 and 5,565.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,965.58 : 19,443.90 = 5,565.42 : x
2. Step 2: Convert to fraction form
   12,965.58/19,443.90 = 5,565.42/x
3. Step 3: Cross multiply
   12,965.58x = 19,443.90 × 5,565.42
4. Step 4: Simplify right side
   12,965.58x = 108,213,469.94
5. Step 5: Solve for x
   x = 108,213,469.94/12,965.58
6. Step 6: Final answer
   x = 8,346.21