Finding the Fourth Proportional to 25,695.45, 35,393.72 and 18,128.43

Step by Step Solution

1. Step 1: Write the proportion equation
   25,695.45 : 35,393.72 = 18,128.43 : x
2. Step 2: Convert to fraction form
   25,695.45/35,393.72 = 18,128.43/x
3. Step 3: Cross multiply
   25,695.45x = 35,393.72 × 18,128.43
4. Step 4: Simplify right side
   25,695.45x = 641,632,484.82
5. Step 5: Solve for x
   x = 641,632,484.82/25,695.45
6. Step 6: Final answer
   x = 24,970.67