Finding the Fourth Proportional to 23,118.05, 31,902.89 and 12,507.71

Step by Step Solution

1. Step 1: Write the proportion equation
   23,118.05 : 31,902.89 = 12,507.71 : x
2. Step 2: Convert to fraction form
   23,118.05/31,902.89 = 12,507.71/x
3. Step 3: Cross multiply
   23,118.05x = 31,902.89 × 12,507.71
4. Step 4: Simplify right side
   23,118.05x = 399,031,874.23
5. Step 5: Solve for x
   x = 399,031,874.23/23,118.05
6. Step 6: Final answer
   x = 17,260.62