Finding the Fourth Proportional to 25,691.33, 38,539.35 and 10,105.31

Step by Step Solution

1. Step 1: Write the proportion equation
   25,691.33 : 38,539.35 = 10,105.31 : x
2. Step 2: Convert to fraction form
   25,691.33/38,539.35 = 10,105.31/x
3. Step 3: Cross multiply
   25,691.33x = 38,539.35 × 10,105.31
4. Step 4: Simplify right side
   25,691.33x = 389,451,886.25
5. Step 5: Solve for x
   x = 389,451,886.25/25,691.33
6. Step 6: Final answer
   x = 15,158.89