Finding the Fourth Proportional to 25,458.66, 35,131.71 and 14,128.02

Step by Step Solution

1. Step 1: Write the proportion equation
   25,458.66 : 35,131.71 = 14,128.02 : x
2. Step 2: Convert to fraction form
   25,458.66/35,131.71 = 14,128.02/x
3. Step 3: Cross multiply
   25,458.66x = 35,131.71 × 14,128.02
4. Step 4: Simplify right side
   25,458.66x = 496,341,501.51
5. Step 5: Solve for x
   x = 496,341,501.51/25,458.66
6. Step 6: Final answer
   x = 19,495.98