Finding the Fourth Proportional to 12,910.76, 19,369.50 and 3,677.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,910.76 : 19,369.50 = 3,677.48 : x
2. Step 2: Convert to fraction form
   12,910.76/19,369.50 = 3,677.48/x
3. Step 3: Cross multiply
   12,910.76x = 19,369.50 × 3,677.48
4. Step 4: Simplify right side
   12,910.76x = 71,230,948.86
5. Step 5: Solve for x
   x = 71,230,948.86/12,910.76
6. Step 6: Final answer
   x = 5,517.18