Finding the Fourth Proportional to 6,648.29, 9,171.52 and 4,129.59

Step by Step Solution

1. Step 1: Write the proportion equation
   6,648.29 : 9,171.52 = 4,129.59 : x
2. Step 2: Convert to fraction form
   6,648.29/9,171.52 = 4,129.59/x
3. Step 3: Cross multiply
   6,648.29x = 9,171.52 × 4,129.59
4. Step 4: Simplify right side
   6,648.29x = 37,874,606.95
5. Step 5: Solve for x
   x = 37,874,606.95/6,648.29
6. Step 6: Final answer
   x = 5,696.90