Finding the Fourth Proportional to 12,884.70, 19,308.82 and 5,481.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,884.70 : 19,308.82 = 5,481.70 : x
2. Step 2: Convert to fraction form
   12,884.70/19,308.82 = 5,481.70/x
3. Step 3: Cross multiply
   12,884.70x = 19,308.82 × 5,481.70
4. Step 4: Simplify right side
   12,884.70x = 105,845,144.89
5. Step 5: Solve for x
   x = 105,845,144.89/12,884.70
6. Step 6: Final answer
   x = 8,214.80