Finding the Fourth Proportional to 5,155.76, 7,118.00 and 3,390.41

Step by Step Solution

1. Step 1: Write the proportion equation
   5,155.76 : 7,118.00 = 3,390.41 : x
2. Step 2: Convert to fraction form
   5,155.76/7,118.00 = 3,390.41/x
3. Step 3: Cross multiply
   5,155.76x = 7,118.00 × 3,390.41
4. Step 4: Simplify right side
   5,155.76x = 24,132,885.84
5. Step 5: Solve for x
   x = 24,132,885.84/5,155.76
6. Step 6: Final answer
   x = 4,680.77