Finding the Fourth Proportional to 25,442.32, 35,105.86 and 15,364

Step by Step Solution

1. Step 1: Write the proportion equation
   25,442.32 : 35,105.86 = 15,364 : x
2. Step 2: Convert to fraction form
   25,442.32/35,105.86 = 15,364/x
3. Step 3: Cross multiply
   25,442.32x = 35,105.86 × 15,364
4. Step 4: Simplify right side
   25,442.32x = 539,366,433.04
5. Step 5: Solve for x
   x = 539,366,433.04/25,442.32
6. Step 6: Final answer
   x = 21,199.58