Finding the Fourth Proportional to 6,109.84, 9,150.28 and 3,911.76

Step by Step Solution

1. Step 1: Write the proportion equation
   6,109.84 : 9,150.28 = 3,911.76 : x
2. Step 2: Convert to fraction form
   6,109.84/9,150.28 = 3,911.76/x
3. Step 3: Cross multiply
   6,109.84x = 9,150.28 × 3,911.76
4. Step 4: Simplify right side
   6,109.84x = 35,793,699.29
5. Step 5: Solve for x
   x = 35,793,699.29/6,109.84
6. Step 6: Final answer
   x = 5,858.37