Finding the Fourth Proportional to 13,076.31, 18,046.88 and 7,771.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,076.31 : 18,046.88 = 7,771.12 : x
2. Step 2: Convert to fraction form
   13,076.31/18,046.88 = 7,771.12/x
3. Step 3: Cross multiply
   13,076.31x = 18,046.88 × 7,771.12
4. Step 4: Simplify right side
   13,076.31x = 140,244,470.11
5. Step 5: Solve for x
   x = 140,244,470.11/13,076.31
6. Step 6: Final answer
   x = 10,725.08