Finding the Fourth Proportional to 12,339.15, 17,028.16 and 7,492.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,339.15 : 17,028.16 = 7,492.47 : x
2. Step 2: Convert to fraction form
   12,339.15/17,028.16 = 7,492.47/x
3. Step 3: Cross multiply
   12,339.15x = 17,028.16 × 7,492.47
4. Step 4: Simplify right side
   12,339.15x = 127,582,892.81
5. Step 5: Solve for x
   x = 127,582,892.81/12,339.15
6. Step 6: Final answer
   x = 10,339.69