Finding the Fourth Proportional to 12,854.55, 19,283.24 and 4,087.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,854.55 : 19,283.24 = 4,087.42 : x
2. Step 2: Convert to fraction form
   12,854.55/19,283.24 = 4,087.42/x
3. Step 3: Cross multiply
   12,854.55x = 19,283.24 × 4,087.42
4. Step 4: Simplify right side
   12,854.55x = 78,818,662.85
5. Step 5: Solve for x
   x = 78,818,662.85/12,854.55
6. Step 6: Final answer
   x = 6,131.58