Finding the Fourth Proportional to 25,056, 34,577.28 and 13,878.72

Step by Step Solution

1. Step 1: Write the proportion equation
   25,056 : 34,577.28 = 13,878.72 : x
2. Step 2: Convert to fraction form
   25,056/34,577.28 = 13,878.72/x
3. Step 3: Cross multiply
   25,056x = 34,577.28 × 13,878.72
4. Step 4: Simplify right side
   25,056x = 479,888,387.48
5. Step 5: Solve for x
   x = 479,888,387.48/25,056
6. Step 6: Final answer
   x = 19,152.63