Finding the Fourth Proportional to 12,808.34, 19,214.49 and 5,412.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,808.34 : 19,214.49 = 5,412.83 : x
2. Step 2: Convert to fraction form
   12,808.34/19,214.49 = 5,412.83/x
3. Step 3: Cross multiply
   12,808.34x = 19,214.49 × 5,412.83
4. Step 4: Simplify right side
   12,808.34x = 104,004,671.83
5. Step 5: Solve for x
   x = 104,004,671.83/12,808.34
6. Step 6: Final answer
   x = 8,120.08