Finding the Fourth Proportional to 3,888.54, 5,823.50 and 3,421.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,888.54 : 5,823.50 = 3,421.58 : x
2. Step 2: Convert to fraction form
   3,888.54/5,823.50 = 3,421.58/x
3. Step 3: Cross multiply
   3,888.54x = 5,823.50 × 3,421.58
4. Step 4: Simplify right side
   3,888.54x = 19,925,524.90
5. Step 5: Solve for x
   x = 19,925,524.90/3,888.54
6. Step 6: Final answer
   x = 5,124.17