Finding the Fourth Proportional to 12,677.58, 19,016.57 and 3,912.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,677.58 : 19,016.57 = 3,912.50 : x
2. Step 2: Convert to fraction form
   12,677.58/19,016.57 = 3,912.50/x
3. Step 3: Cross multiply
   12,677.58x = 19,016.57 × 3,912.50
4. Step 4: Simplify right side
   12,677.58x = 74,402,387.45
5. Step 5: Solve for x
   x = 74,402,387.45/12,677.58
6. Step 6: Final answer
   x = 5,868.82