Finding the Fourth Proportional to 23,160.42, 31,961.25 and 12,550.05

Step by Step Solution

1. Step 1: Write the proportion equation
   23,160.42 : 31,961.25 = 12,550.05 : x
2. Step 2: Convert to fraction form
   23,160.42/31,961.25 = 12,550.05/x
3. Step 3: Cross multiply
   23,160.42x = 31,961.25 × 12,550.05
4. Step 4: Simplify right side
   23,160.42x = 401,115,285.56
5. Step 5: Solve for x
   x = 401,115,285.56/23,160.42
6. Step 6: Final answer
   x = 17,319.00