Finding the Fourth Proportional to 7,131.30, 10,699.48 and 3,182.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,131.30 : 10,699.48 = 3,182.20 : x
2. Step 2: Convert to fraction form
   7,131.30/10,699.48 = 3,182.20/x
3. Step 3: Cross multiply
   7,131.30x = 10,699.48 × 3,182.20
4. Step 4: Simplify right side
   7,131.30x = 34,047,866.96
5. Step 5: Solve for x
   x = 34,047,866.96/7,131.30
6. Step 6: Final answer
   x = 4,774.43