Finding the Fourth Proportional to 12,631.06, 18,923.89 and 7,434.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,631.06 : 18,923.89 = 7,434.10 : x
2. Step 2: Convert to fraction form
   12,631.06/18,923.89 = 7,434.10/x
3. Step 3: Cross multiply
   12,631.06x = 18,923.89 × 7,434.10
4. Step 4: Simplify right side
   12,631.06x = 140,682,090.65
5. Step 5: Solve for x
   x = 140,682,090.65/12,631.06
6. Step 6: Final answer
   x = 11,137.79