Finding the Fourth Proportional to 12,870.68, 19,307.46 and 4,103.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870.68 : 19,307.46 = 4,103.56 : x
2. Step 2: Convert to fraction form
   12,870.68/19,307.46 = 4,103.56/x
3. Step 3: Cross multiply
   12,870.68x = 19,307.46 × 4,103.56
4. Step 4: Simplify right side
   12,870.68x = 79,229,320.56
5. Step 5: Solve for x
   x = 79,229,320.56/12,870.68
6. Step 6: Final answer
   x = 6,155.80