Finding the Fourth Proportional to 25,434.70, 38,156.82 and 10,238.42

Step by Step Solution

1. Step 1: Write the proportion equation
   25,434.70 : 38,156.82 = 10,238.42 : x
2. Step 2: Convert to fraction form
   25,434.70/38,156.82 = 10,238.42/x
3. Step 3: Cross multiply
   25,434.70x = 38,156.82 × 10,238.42
4. Step 4: Simplify right side
   25,434.70x = 390,665,549.02
5. Step 5: Solve for x
   x = 390,665,549.02/25,434.70
6. Step 6: Final answer
   x = 15,359.55