Finding the Fourth Proportional to 12,992.48, 17,929.61 and 7,024.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,992.48 : 17,929.61 = 7,024.15 : x
2. Step 2: Convert to fraction form
   12,992.48/17,929.61 = 7,024.15/x
3. Step 3: Cross multiply
   12,992.48x = 17,929.61 × 7,024.15
4. Step 4: Simplify right side
   12,992.48x = 125,940,303.47
5. Step 5: Solve for x
   x = 125,940,303.47/12,992.48
6. Step 6: Final answer
   x = 9,693.32