Finding the Fourth Proportional to 25,311.42, 37,974.51 and 10,517.58

Step by Step Solution

1. Step 1: Write the proportion equation
   25,311.42 : 37,974.51 = 10,517.58 : x
2. Step 2: Convert to fraction form
   25,311.42/37,974.51 = 10,517.58/x
3. Step 3: Cross multiply
   25,311.42x = 37,974.51 × 10,517.58
4. Step 4: Simplify right side
   25,311.42x = 399,399,946.89
5. Step 5: Solve for x
   x = 399,399,946.89/25,311.42
6. Step 6: Final answer
   x = 15,779.44