Finding the Fourth Proportional to 6,109.82, 8,431.54 and 3,315.32

Step by Step Solution

1. Step 1: Write the proportion equation
   6,109.82 : 8,431.54 = 3,315.32 : x
2. Step 2: Convert to fraction form
   6,109.82/8,431.54 = 3,315.32/x
3. Step 3: Cross multiply
   6,109.82x = 8,431.54 × 3,315.32
4. Step 4: Simplify right side
   6,109.82x = 27,953,253.19
5. Step 5: Solve for x
   x = 27,953,253.19/6,109.82
6. Step 6: Final answer
   x = 4,575.14