Finding the Fourth Proportional to 12,612.22, 17,402.78 and 7,644.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,612.22 : 17,402.78 = 7,644.22 : x
2. Step 2: Convert to fraction form
   12,612.22/17,402.78 = 7,644.22/x
3. Step 3: Cross multiply
   12,612.22x = 17,402.78 × 7,644.22
4. Step 4: Simplify right side
   12,612.22x = 133,030,678.93
5. Step 5: Solve for x
   x = 133,030,678.93/12,612.22
6. Step 6: Final answer
   x = 10,547.76