Finding the Fourth Proportional to 13,101.54, 18,080.20 and 7,796.55

Step by Step Solution

1. Step 1: Write the proportion equation
   13,101.54 : 18,080.20 = 7,796.55 : x
2. Step 2: Convert to fraction form
   13,101.54/18,080.20 = 7,796.55/x
3. Step 3: Cross multiply
   13,101.54x = 18,080.20 × 7,796.55
4. Step 4: Simplify right side
   13,101.54x = 140,963,144.33
5. Step 5: Solve for x
   x = 140,963,144.33/13,101.54
6. Step 6: Final answer
   x = 10,759.28