Finding the Fourth Proportional to 12,783.33, 17,638.28 and 8,064.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,783.33 : 17,638.28 = 8,064.88 : x
2. Step 2: Convert to fraction form
   12,783.33/17,638.28 = 8,064.88/x
3. Step 3: Cross multiply
   12,783.33x = 17,638.28 × 8,064.88
4. Step 4: Simplify right side
   12,783.33x = 142,250,611.61
5. Step 5: Solve for x
   x = 142,250,611.61/12,783.33
6. Step 6: Final answer
   x = 11,127.82