Finding the Fourth Proportional to 3,973.12, 5,475.36 and 3,875.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,973.12 : 5,475.36 = 3,875.92 : x
2. Step 2: Convert to fraction form
   3,973.12/5,475.36 = 3,875.92/x
3. Step 3: Cross multiply
   3,973.12x = 5,475.36 × 3,875.92
4. Step 4: Simplify right side
   3,973.12x = 21,222,057.33
5. Step 5: Solve for x
   x = 21,222,057.33/3,973.12
6. Step 6: Final answer
   x = 5,341.41