Finding the Fourth Proportional to 25,802.73, 35,607.33 and 21,811.50

Step by Step Solution

1. Step 1: Write the proportion equation
   25,802.73 : 35,607.33 = 21,811.50 : x
2. Step 2: Convert to fraction form
   25,802.73/35,607.33 = 21,811.50/x
3. Step 3: Cross multiply
   25,802.73x = 35,607.33 × 21,811.50
4. Step 4: Simplify right side
   25,802.73x = 776,649,278.30
5. Step 5: Solve for x
   x = 776,649,278.30/25,802.73
6. Step 6: Final answer
   x = 30,099.50