Finding the Fourth Proportional to 13,796.72, 20,695.76 and 3,937.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,796.72 : 20,695.76 = 3,937.45 : x
2. Step 2: Convert to fraction form
   13,796.72/20,695.76 = 3,937.45/x
3. Step 3: Cross multiply
   13,796.72x = 20,695.76 × 3,937.45
4. Step 4: Simplify right side
   13,796.72x = 81,488,520.21
5. Step 5: Solve for x
   x = 81,488,520.21/13,796.72
6. Step 6: Final answer
   x = 5,906.37