Finding the Fourth Proportional to 12,470.13, 17,210.37 and 7,165.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,470.13 : 17,210.37 = 7,165.98 : x
2. Step 2: Convert to fraction form
   12,470.13/17,210.37 = 7,165.98/x
3. Step 3: Cross multiply
   12,470.13x = 17,210.37 × 7,165.98
4. Step 4: Simplify right side
   12,470.13x = 123,329,167.21
5. Step 5: Solve for x
   x = 123,329,167.21/12,470.13
6. Step 6: Final answer
   x = 9,889.97