Finding the Fourth Proportional to 6,405.05, 9,611.22 and 5,114.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,405.05 : 9,611.22 = 5,114.72 : x
2. Step 2: Convert to fraction form
   6,405.05/9,611.22 = 5,114.72/x
3. Step 3: Cross multiply
   6,405.05x = 9,611.22 × 5,114.72
4. Step 4: Simplify right side
   6,405.05x = 49,158,693.76
5. Step 5: Solve for x
   x = 49,158,693.76/6,405.05
6. Step 6: Final answer
   x = 7,674.99