Finding the Fourth Proportional to 6,109.78, 8,430.02 and 3,591.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,109.78 : 8,430.02 = 3,591.69 : x
2. Step 2: Convert to fraction form
   6,109.78/8,430.02 = 3,591.69/x
3. Step 3: Cross multiply
   6,109.78x = 8,430.02 × 3,591.69
4. Step 4: Simplify right side
   6,109.78x = 30,278,018.53
5. Step 5: Solve for x
   x = 30,278,018.53/6,109.78
6. Step 6: Final answer
   x = 4,955.66