Finding the Fourth Proportional to 6,180.96, 8,532.72 and 4,087.20

Step by Step Solution

1. Step 1: Write the proportion equation
   6,180.96 : 8,532.72 = 4,087.20 : x
2. Step 2: Convert to fraction form
   6,180.96/8,532.72 = 4,087.20/x
3. Step 3: Cross multiply
   6,180.96x = 8,532.72 × 4,087.20
4. Step 4: Simplify right side
   6,180.96x = 34,874,933.18
5. Step 5: Solve for x
   x = 34,874,933.18/6,180.96
6. Step 6: Final answer
   x = 5,642.32