Finding the Fourth Proportional to 13,073.77, 18,043.34 and 7,768.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,073.77 : 18,043.34 = 7,768.59 : x
2. Step 2: Convert to fraction form
   13,073.77/18,043.34 = 7,768.59/x
3. Step 3: Cross multiply
   13,073.77x = 18,043.34 × 7,768.59
4. Step 4: Simplify right side
   13,073.77x = 140,171,310.69
5. Step 5: Solve for x
   x = 140,171,310.69/13,073.77
6. Step 6: Final answer
   x = 10,721.57