Finding the Fourth Proportional to 25,648.72, 35,393.84 and 14,470

Step by Step Solution

1. Step 1: Write the proportion equation
   25,648.72 : 35,393.84 = 14,470 : x
2. Step 2: Convert to fraction form
   25,648.72/35,393.84 = 14,470/x
3. Step 3: Cross multiply
   25,648.72x = 35,393.84 × 14,470
4. Step 4: Simplify right side
   25,648.72x = 512,148,864.80
5. Step 5: Solve for x
   x = 512,148,864.80/25,648.72
6. Step 6: Final answer
   x = 19,967.81