Finding the Fourth Proportional to 12,914.76, 19,372.18 and 3,680.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,914.76 : 19,372.18 = 3,680.76 : x
2. Step 2: Convert to fraction form
   12,914.76/19,372.18 = 3,680.76/x
3. Step 3: Cross multiply
   12,914.76x = 19,372.18 × 3,680.76
4. Step 4: Simplify right side
   12,914.76x = 71,304,345.26
5. Step 5: Solve for x
   x = 71,304,345.26/12,914.76
6. Step 6: Final answer
   x = 5,521.15