Finding the Fourth Proportional to 25,685.51, 35,445.88 and 14,355

Step by Step Solution

1. Step 1: Write the proportion equation
   25,685.51 : 35,445.88 = 14,355 : x
2. Step 2: Convert to fraction form
   25,685.51/35,445.88 = 14,355/x
3. Step 3: Cross multiply
   25,685.51x = 35,445.88 × 14,355
4. Step 4: Simplify right side
   25,685.51x = 508,825,607.40
5. Step 5: Solve for x
   x = 508,825,607.40/25,685.51
6. Step 6: Final answer
   x = 19,809.83