Finding the Fourth Proportional to 13,076.10, 18,046.53 and 7,770.87

Step by Step Solution

1. Step 1: Write the proportion equation
   13,076.10 : 18,046.53 = 7,770.87 : x
2. Step 2: Convert to fraction form
   13,076.10/18,046.53 = 7,770.87/x
3. Step 3: Cross multiply
   13,076.10x = 18,046.53 × 7,770.87
4. Step 4: Simplify right side
   13,076.10x = 140,237,238.58
5. Step 5: Solve for x
   x = 140,237,238.58/13,076.10
6. Step 6: Final answer
   x = 10,724.70