Finding the Fourth Proportional to 5,557.80, 7,671.06 and 3,669.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,557.80 : 7,671.06 = 3,669.72 : x
2. Step 2: Convert to fraction form
   5,557.80/7,671.06 = 3,669.72/x
3. Step 3: Cross multiply
   5,557.80x = 7,671.06 × 3,669.72
4. Step 4: Simplify right side
   5,557.80x = 28,150,642.30
5. Step 5: Solve for x
   x = 28,150,642.30/5,557.80
6. Step 6: Final answer
   x = 5,065.07