Finding the Fourth Proportional to 12,787.59, 17,648.97 and 8,009.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,787.59 : 17,648.97 = 8,009.34 : x
2. Step 2: Convert to fraction form
   12,787.59/17,648.97 = 8,009.34/x
3. Step 3: Cross multiply
   12,787.59x = 17,648.97 × 8,009.34
4. Step 4: Simplify right side
   12,787.59x = 141,356,601.38
5. Step 5: Solve for x
   x = 141,356,601.38/12,787.59
6. Step 6: Final answer
   x = 11,054.20