Finding the Fourth Proportional to 12,573.78, 18,860.76 and 3,809.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,573.78 : 18,860.76 = 3,809.34 : x
2. Step 2: Convert to fraction form
   12,573.78/18,860.76 = 3,809.34/x
3. Step 3: Cross multiply
   12,573.78x = 18,860.76 × 3,809.34
4. Step 4: Simplify right side
   12,573.78x = 71,847,047.50
5. Step 5: Solve for x
   x = 71,847,047.50/12,573.78
6. Step 6: Final answer
   x = 5,714.04