Finding the Fourth Proportional to 6,623.94, 9,145.32 and 4,108.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,623.94 : 9,145.32 = 4,108.72 : x
2. Step 2: Convert to fraction form
   6,623.94/9,145.32 = 4,108.72/x
3. Step 3: Cross multiply
   6,623.94x = 9,145.32 × 4,108.72
4. Step 4: Simplify right side
   6,623.94x = 37,575,559.19
5. Step 5: Solve for x
   x = 37,575,559.19/6,623.94
6. Step 6: Final answer
   x = 5,672.69