Finding the Fourth Proportional to 12,470.02, 17,209.47 and 7,166.95

Step by Step Solution

1. Step 1: Write the proportion equation
   12,470.02 : 17,209.47 = 7,166.95 : x
2. Step 2: Convert to fraction form
   12,470.02/17,209.47 = 7,166.95/x
3. Step 3: Cross multiply
   12,470.02x = 17,209.47 × 7,166.95
4. Step 4: Simplify right side
   12,470.02x = 123,339,411.02
5. Step 5: Solve for x
   x = 123,339,411.02/12,470.02
6. Step 6: Final answer
   x = 9,890.88