Finding the Fourth Proportional to 13,185.12, 19,774.44 and 3,951.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,185.12 : 19,774.44 = 3,951.12 : x
2. Step 2: Convert to fraction form
   13,185.12/19,774.44 = 3,951.12/x
3. Step 3: Cross multiply
   13,185.12x = 19,774.44 × 3,951.12
4. Step 4: Simplify right side
   13,185.12x = 78,131,185.37
5. Step 5: Solve for x
   x = 78,131,185.37/13,185.12
6. Step 6: Final answer
   x = 5,925.71