Finding the Fourth Proportional to 6,488.40, 8,958.72 and 5,068.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,488.40 : 8,958.72 = 5,068.56 : x
2. Step 2: Convert to fraction form
   6,488.40/8,958.72 = 5,068.56/x
3. Step 3: Cross multiply
   6,488.40x = 8,958.72 × 5,068.56
4. Step 4: Simplify right side
   6,488.40x = 45,407,809.84
5. Step 5: Solve for x
   x = 45,407,809.84/6,488.40
6. Step 6: Final answer
   x = 6,998.31