Finding the Fourth Proportional to 3,888.84, 5,367.76 and 3,690.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,888.84 : 5,367.76 = 3,690.42 : x
2. Step 2: Convert to fraction form
   3,888.84/5,367.76 = 3,690.42/x
3. Step 3: Cross multiply
   3,888.84x = 5,367.76 × 3,690.42
4. Step 4: Simplify right side
   3,888.84x = 19,809,288.86
5. Step 5: Solve for x
   x = 19,809,288.86/3,888.84
6. Step 6: Final answer
   x = 5,093.88