Finding the Fourth Proportional to 28,256.42, 42,553.82 and 25,734.13

Step by Step Solution

1. Step 1: Write the proportion equation
   28,256.42 : 42,553.82 = 25,734.13 : x
2. Step 2: Convert to fraction form
   28,256.42/42,553.82 = 25,734.13/x
3. Step 3: Cross multiply
   28,256.42x = 42,553.82 × 25,734.13
4. Step 4: Simplify right side
   28,256.42x = 1,095,085,300.82
5. Step 5: Solve for x
   x = 1,095,085,300.82/28,256.42
6. Step 6: Final answer
   x = 38,755.28