Finding the Fourth Proportional to 13,012.82, 19,517.12 and 4,245.60

Step by Step Solution

1. Step 1: Write the proportion equation
   13,012.82 : 19,517.12 = 4,245.60 : x
2. Step 2: Convert to fraction form
   13,012.82/19,517.12 = 4,245.60/x
3. Step 3: Cross multiply
   13,012.82x = 19,517.12 × 4,245.60
4. Step 4: Simplify right side
   13,012.82x = 82,861,884.67
5. Step 5: Solve for x
   x = 82,861,884.67/13,012.82
6. Step 6: Final answer
   x = 6,367.71