Finding the Fourth Proportional to 12,825.30, 17,691.80 and 7,519.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,825.30 : 17,691.80 = 7,519.10 : x
2. Step 2: Convert to fraction form
   12,825.30/17,691.80 = 7,519.10/x
3. Step 3: Cross multiply
   12,825.30x = 17,691.80 × 7,519.10
4. Step 4: Simplify right side
   12,825.30x = 133,026,287.33
5. Step 5: Solve for x
   x = 133,026,287.33/12,825.30
6. Step 6: Final answer
   x = 10,372.18