Finding the Fourth Proportional to 13,100.80, 18,076.30 and 7,794.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.80 : 18,076.30 = 7,794.58 : x
2. Step 2: Convert to fraction form
   13,100.80/18,076.30 = 7,794.58/x
3. Step 3: Cross multiply
   13,100.80x = 18,076.30 × 7,794.58
4. Step 4: Simplify right side
   13,100.80x = 140,897,101.78
5. Step 5: Solve for x
   x = 140,897,101.78/13,100.80
6. Step 6: Final answer
   x = 10,754.85