Finding the Fourth Proportional to 12,868.56, 19,308.24 and 5,474.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,868.56 : 19,308.24 = 5,474.61 : x
2. Step 2: Convert to fraction form
   12,868.56/19,308.24 = 5,474.61/x
3. Step 3: Cross multiply
   12,868.56x = 19,308.24 × 5,474.61
4. Step 4: Simplify right side
   12,868.56x = 105,705,083.79
5. Step 5: Solve for x
   x = 105,705,083.79/12,868.56
6. Step 6: Final answer
   x = 8,214.21