Finding the Fourth Proportional to 7,109.82, 10,663.46 and 3,213.30

Step by Step Solution

1. Step 1: Write the proportion equation
   7,109.82 : 10,663.46 = 3,213.30 : x
2. Step 2: Convert to fraction form
   7,109.82/10,663.46 = 3,213.30/x
3. Step 3: Cross multiply
   7,109.82x = 10,663.46 × 3,213.30
4. Step 4: Simplify right side
   7,109.82x = 34,264,896.02
5. Step 5: Solve for x
   x = 34,264,896.02/7,109.82
6. Step 6: Final answer
   x = 4,819.38