Finding the Fourth Proportional to 6,405.75, 8,839.83 and 5,155.52

Step by Step Solution

1. Step 1: Write the proportion equation
   6,405.75 : 8,839.83 = 5,155.52 : x
2. Step 2: Convert to fraction form
   6,405.75/8,839.83 = 5,155.52/x
3. Step 3: Cross multiply
   6,405.75x = 8,839.83 × 5,155.52
4. Step 4: Simplify right side
   6,405.75x = 45,573,895.50
5. Step 5: Solve for x
   x = 45,573,895.50/6,405.75
6. Step 6: Final answer
   x = 7,114.53