Finding the Fourth Proportional to 13,147.42, 19,718.16 and 3,787.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,147.42 : 19,718.16 = 3,787.42 : x
2. Step 2: Convert to fraction form
   13,147.42/19,718.16 = 3,787.42/x
3. Step 3: Cross multiply
   13,147.42x = 19,718.16 × 3,787.42
4. Step 4: Simplify right side
   13,147.42x = 74,680,953.55
5. Step 5: Solve for x
   x = 74,680,953.55/13,147.42
6. Step 6: Final answer
   x = 5,680.27