Finding the Fourth Proportional to 12,677.57, 19,017.50 and 3,317.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,677.57 : 19,017.50 = 3,317.55 : x
2. Step 2: Convert to fraction form
   12,677.57/19,017.50 = 3,317.55/x
3. Step 3: Cross multiply
   12,677.57x = 19,017.50 × 3,317.55
4. Step 4: Simplify right side
   12,677.57x = 63,091,490.54
5. Step 5: Solve for x
   x = 63,091,490.54/12,677.57
6. Step 6: Final answer
   x = 4,976.63