Finding the Fourth Proportional to 12,628.84, 17,424.28 and 8,152.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,628.84 : 17,424.28 = 8,152.80 : x
2. Step 2: Convert to fraction form
   12,628.84/17,424.28 = 8,152.80/x
3. Step 3: Cross multiply
   12,628.84x = 17,424.28 × 8,152.80
4. Step 4: Simplify right side
   12,628.84x = 142,056,669.98
5. Step 5: Solve for x
   x = 142,056,669.98/12,628.84
6. Step 6: Final answer
   x = 11,248.59