Finding the Fourth Proportional to 12,914.31, 19,374.72 and 3,680.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,914.31 : 19,374.72 = 3,680.31 : x
2. Step 2: Convert to fraction form
   12,914.31/19,374.72 = 3,680.31/x
3. Step 3: Cross multiply
   12,914.31x = 19,374.72 × 3,680.31
4. Step 4: Simplify right side
   12,914.31x = 71,304,975.76
5. Step 5: Solve for x
   x = 71,304,975.76/12,914.31
6. Step 6: Final answer
   x = 5,521.39