Finding the Fourth Proportional to 25,654.80, 35,409.12 and 16,686.72

Step by Step Solution

1. Step 1: Write the proportion equation
   25,654.80 : 35,409.12 = 16,686.72 : x
2. Step 2: Convert to fraction form
   25,654.80/35,409.12 = 16,686.72/x
3. Step 3: Cross multiply
   25,654.80x = 35,409.12 × 16,686.72
4. Step 4: Simplify right side
   25,654.80x = 590,862,070.89
5. Step 5: Solve for x
   x = 590,862,070.89/25,654.80
6. Step 6: Final answer
   x = 23,031.25