Finding the Fourth Proportional to 12,874.24, 19,313.34 and 5,476.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,874.24 : 19,313.34 = 5,476.72 : x
2. Step 2: Convert to fraction form
   12,874.24/19,313.34 = 5,476.72/x
3. Step 3: Cross multiply
   12,874.24x = 19,313.34 × 5,476.72
4. Step 4: Simplify right side
   12,874.24x = 105,773,658.88
5. Step 5: Solve for x
   x = 105,773,658.88/12,874.24
6. Step 6: Final answer
   x = 8,215.91