Finding the Fourth Proportional to 3,671.88, 5,508.90 and 3,156.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,671.88 : 5,508.90 = 3,156.72 : x
2. Step 2: Convert to fraction form
   3,671.88/5,508.90 = 3,156.72/x
3. Step 3: Cross multiply
   3,671.88x = 5,508.90 × 3,156.72
4. Step 4: Simplify right side
   3,671.88x = 17,390,054.81
5. Step 5: Solve for x
   x = 17,390,054.81/3,671.88
6. Step 6: Final answer
   x = 4,736.01