Finding the Fourth Proportional to 25,120.72, 34,665.96 and 13,942

Step by Step Solution

1. Step 1: Write the proportion equation
   25,120.72 : 34,665.96 = 13,942 : x
2. Step 2: Convert to fraction form
   25,120.72/34,665.96 = 13,942/x
3. Step 3: Cross multiply
   25,120.72x = 34,665.96 × 13,942
4. Step 4: Simplify right side
   25,120.72x = 483,312,814.32
5. Step 5: Solve for x
   x = 483,312,814.32/25,120.72
6. Step 6: Final answer
   x = 19,239.61