Finding the Fourth Proportional to 12,002.70, 17,972.55 and 8,473.65

Step by Step Solution

1. Step 1: Write the proportion equation
   12,002.70 : 17,972.55 = 8,473.65 : x
2. Step 2: Convert to fraction form
   12,002.70/17,972.55 = 8,473.65/x
3. Step 3: Cross multiply
   12,002.70x = 17,972.55 × 8,473.65
4. Step 4: Simplify right side
   12,002.70x = 152,293,098.31
5. Step 5: Solve for x
   x = 152,293,098.31/12,002.70
6. Step 6: Final answer
   x = 12,688.24