Finding the Fourth Proportional to 13,076.17, 18,043.76 and 7,769.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,076.17 : 18,043.76 = 7,769.96 : x
2. Step 2: Convert to fraction form
   13,076.17/18,043.76 = 7,769.96/x
3. Step 3: Cross multiply
   13,076.17x = 18,043.76 × 7,769.96
4. Step 4: Simplify right side
   13,076.17x = 140,199,290.32
5. Step 5: Solve for x
   x = 140,199,290.32/13,076.17
6. Step 6: Final answer
   x = 10,721.74