Finding the Fourth Proportional to 25,679.31, 35,436.78 and 14,348.88

Step by Step Solution

1. Step 1: Write the proportion equation
   25,679.31 : 35,436.78 = 14,348.88 : x
2. Step 2: Convert to fraction form
   25,679.31/35,436.78 = 14,348.88/x
3. Step 3: Cross multiply
   25,679.31x = 35,436.78 × 14,348.88
4. Step 4: Simplify right side
   25,679.31x = 508,478,103.81
5. Step 5: Solve for x
   x = 508,478,103.81/25,679.31
6. Step 6: Final answer
   x = 19,801.08