Finding the Fourth Proportional to 25,279.37, 37,942.32 and 12,808.07

Step by Step Solution

1. Step 1: Write the proportion equation
   25,279.37 : 37,942.32 = 12,808.07 : x
2. Step 2: Convert to fraction form
   25,279.37/37,942.32 = 12,808.07/x
3. Step 3: Cross multiply
   25,279.37x = 37,942.32 × 12,808.07
4. Step 4: Simplify right side
   25,279.37x = 485,968,104.55
5. Step 5: Solve for x
   x = 485,968,104.55/25,279.37
6. Step 6: Final answer
   x = 19,223.90