Finding the Fourth Proportional to 12,866.30, 19,300.35 and 5,469.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,866.30 : 19,300.35 = 5,469.92 : x
2. Step 2: Convert to fraction form
   12,866.30/19,300.35 = 5,469.92/x
3. Step 3: Cross multiply
   12,866.30x = 19,300.35 × 5,469.92
4. Step 4: Simplify right side
   12,866.30x = 105,571,370.47
5. Step 5: Solve for x
   x = 105,571,370.47/12,866.30
6. Step 6: Final answer
   x = 8,205.26