Finding the Fourth Proportional to 13,665.46, 20,496.15 and 3,803.71

Step by Step Solution

1. Step 1: Write the proportion equation
   13,665.46 : 20,496.15 = 3,803.71 : x
2. Step 2: Convert to fraction form
   13,665.46/20,496.15 = 3,803.71/x
3. Step 3: Cross multiply
   13,665.46x = 20,496.15 × 3,803.71
4. Step 4: Simplify right side
   13,665.46x = 77,961,410.72
5. Step 5: Solve for x
   x = 77,961,410.72/13,665.46
6. Step 6: Final answer
   x = 5,705.00