Finding the Fourth Proportional to 8,958.90, 13,423.79 and 5,488.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,958.90 : 13,423.79 = 5,488.82 : x
2. Step 2: Convert to fraction form
   8,958.90/13,423.79 = 5,488.82/x
3. Step 3: Cross multiply
   8,958.90x = 13,423.79 × 5,488.82
4. Step 4: Simplify right side
   8,958.90x = 73,680,767.03
5. Step 5: Solve for x
   x = 73,680,767.03/8,958.90
6. Step 6: Final answer
   x = 8,224.31