Finding the Fourth Proportional to 25,632, 35,372.16 and 13,856

Step by Step Solution

1. Step 1: Write the proportion equation
   25,632 : 35,372.16 = 13,856 : x
2. Step 2: Convert to fraction form
   25,632/35,372.16 = 13,856/x
3. Step 3: Cross multiply
   25,632x = 35,372.16 × 13,856
4. Step 4: Simplify right side
   25,632x = 490,116,648.96
5. Step 5: Solve for x
   x = 490,116,648.96/25,632
6. Step 6: Final answer
   x = 19,121.28