Finding the Fourth Proportional to 12,402.72, 17,115.72 and 7,097

Step by Step Solution

1. Step 1: Write the proportion equation
   12,402.72 : 17,115.72 = 7,097 : x
2. Step 2: Convert to fraction form
   12,402.72/17,115.72 = 7,097/x
3. Step 3: Cross multiply
   12,402.72x = 17,115.72 × 7,097
4. Step 4: Simplify right side
   12,402.72x = 121,470,264.84
5. Step 5: Solve for x
   x = 121,470,264.84/12,402.72
6. Step 6: Final answer
   x = 9,793.84