Finding the Fourth Proportional to 12,472.10, 18,699.50 and 4,678.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,472.10 : 18,699.50 = 4,678.82 : x
2. Step 2: Convert to fraction form
   12,472.10/18,699.50 = 4,678.82/x
3. Step 3: Cross multiply
   12,472.10x = 18,699.50 × 4,678.82
4. Step 4: Simplify right side
   12,472.10x = 87,491,594.59
5. Step 5: Solve for x
   x = 87,491,594.59/12,472.10
6. Step 6: Final answer
   x = 7,014.99