Finding the Fourth Proportional to 12,573.28, 18,859.83 and 3,085.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,573.28 : 18,859.83 = 3,085.48 : x
2. Step 2: Convert to fraction form
   12,573.28/18,859.83 = 3,085.48/x
3. Step 3: Cross multiply
   12,573.28x = 18,859.83 × 3,085.48
4. Step 4: Simplify right side
   12,573.28x = 58,191,628.27
5. Step 5: Solve for x
   x = 58,191,628.27/12,573.28
6. Step 6: Final answer
   x = 4,628.20