Finding the Fourth Proportional to 12,606.96, 18,909.94 and 5,205.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,606.96 : 18,909.94 = 5,205.86 : x
2. Step 2: Convert to fraction form
   12,606.96/18,909.94 = 5,205.86/x
3. Step 3: Cross multiply
   12,606.96x = 18,909.94 × 5,205.86
4. Step 4: Simplify right side
   12,606.96x = 98,442,500.25
5. Step 5: Solve for x
   x = 98,442,500.25/12,606.96
6. Step 6: Final answer
   x = 7,808.58