Finding the Fourth Proportional to 13,665.42, 20,498.04 and 3,804.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,665.42 : 20,498.04 = 3,804.75 : x
2. Step 2: Convert to fraction form
   13,665.42/20,498.04 = 3,804.75/x
3. Step 3: Cross multiply
   13,665.42x = 20,498.04 × 3,804.75
4. Step 4: Simplify right side
   13,665.42x = 77,989,917.69
5. Step 5: Solve for x
   x = 77,989,917.69/13,665.42
6. Step 6: Final answer
   x = 5,707.10