Finding the Fourth Proportional to 25,911.16, 35,766.63 and 15,300.83

Step by Step Solution

1. Step 1: Write the proportion equation
   25,911.16 : 35,766.63 = 15,300.83 : x
2. Step 2: Convert to fraction form
   25,911.16/35,766.63 = 15,300.83/x
3. Step 3: Cross multiply
   25,911.16x = 35,766.63 × 15,300.83
4. Step 4: Simplify right side
   25,911.16x = 547,259,214.72
5. Step 5: Solve for x
   x = 547,259,214.72/25,911.16
6. Step 6: Final answer
   x = 21,120.60