Finding the Fourth Proportional to 3,944.18, 5,465.98 and 3,888.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,944.18 : 5,465.98 = 3,888.50 : x
2. Step 2: Convert to fraction form
   3,944.18/5,465.98 = 3,888.50/x
3. Step 3: Cross multiply
   3,944.18x = 5,465.98 × 3,888.50
4. Step 4: Simplify right side
   3,944.18x = 21,254,443.79
5. Step 5: Solve for x
   x = 21,254,443.79/3,944.18
6. Step 6: Final answer
   x = 5,388.81