Finding the Fourth Proportional to 6,624.88, 9,141.74 and 3,935.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,624.88 : 9,141.74 = 3,935.89 : x
2. Step 2: Convert to fraction form
   6,624.88/9,141.74 = 3,935.89/x
3. Step 3: Cross multiply
   6,624.88x = 9,141.74 × 3,935.89
4. Step 4: Simplify right side
   6,624.88x = 35,980,889.56
5. Step 5: Solve for x
   x = 35,980,889.56/6,624.88
6. Step 6: Final answer
   x = 5,431.18