Finding the Fourth Proportional to 13,841.94, 20,760.66 and 3,978.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,841.94 : 20,760.66 = 3,978.98 : x
2. Step 2: Convert to fraction form
   13,841.94/20,760.66 = 3,978.98/x
3. Step 3: Cross multiply
   13,841.94x = 20,760.66 × 3,978.98
4. Step 4: Simplify right side
   13,841.94x = 82,606,250.93
5. Step 5: Solve for x
   x = 82,606,250.93/13,841.94
6. Step 6: Final answer
   x = 5,967.82