Finding the Fourth Proportional to 12,702.56, 19,049.38 and 3,815.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,702.56 : 19,049.38 = 3,815.24 : x
2. Step 2: Convert to fraction form
   12,702.56/19,049.38 = 3,815.24/x
3. Step 3: Cross multiply
   12,702.56x = 19,049.38 × 3,815.24
4. Step 4: Simplify right side
   12,702.56x = 72,677,956.55
5. Step 5: Solve for x
   x = 72,677,956.55/12,702.56
6. Step 6: Final answer
   x = 5,721.52