Finding the Fourth Proportional to 12,261.78, 18,475.29 and 10,118.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,261.78 : 18,475.29 = 10,118.52 : x
2. Step 2: Convert to fraction form
   12,261.78/18,475.29 = 10,118.52/x
3. Step 3: Cross multiply
   12,261.78x = 18,475.29 × 10,118.52
4. Step 4: Simplify right side
   12,261.78x = 186,942,591.37
5. Step 5: Solve for x
   x = 186,942,591.37/12,261.78
6. Step 6: Final answer
   x = 15,245.96