Finding the Fourth Proportional to 13,826.84, 20,736.01 and 3,963.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,826.84 : 20,736.01 = 3,963.47 : x
2. Step 2: Convert to fraction form
   13,826.84/20,736.01 = 3,963.47/x
3. Step 3: Cross multiply
   13,826.84x = 20,736.01 × 3,963.47
4. Step 4: Simplify right side
   13,826.84x = 82,186,553.55
5. Step 5: Solve for x
   x = 82,186,553.55/13,826.84
6. Step 6: Final answer
   x = 5,943.99