Finding the Fourth Proportional to 12,624.87, 17,420.28 and 7,587.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,624.87 : 17,420.28 = 7,587.89 : x
2. Step 2: Convert to fraction form
   12,624.87/17,420.28 = 7,587.89/x
3. Step 3: Cross multiply
   12,624.87x = 17,420.28 × 7,587.89
4. Step 4: Simplify right side
   12,624.87x = 132,183,081.31
5. Step 5: Solve for x
   x = 132,183,081.31/12,624.87
6. Step 6: Final answer
   x = 10,470.05