Finding the Fourth Proportional to 12,540.75, 17,307.68 and 7,164.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,540.75 : 17,307.68 = 7,164.04 : x
2. Step 2: Convert to fraction form
   12,540.75/17,307.68 = 7,164.04/x
3. Step 3: Cross multiply
   12,540.75x = 17,307.68 × 7,164.04
4. Step 4: Simplify right side
   12,540.75x = 123,992,800.29
5. Step 5: Solve for x
   x = 123,992,800.29/12,540.75
6. Step 6: Final answer
   x = 9,887.19