Finding the Fourth Proportional to 12,792.78, 17,654.54 and 7,415.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,792.78 : 17,654.54 = 7,415.41 : x
2. Step 2: Convert to fraction form
   12,792.78/17,654.54 = 7,415.41/x
3. Step 3: Cross multiply
   12,792.78x = 17,654.54 × 7,415.41
4. Step 4: Simplify right side
   12,792.78x = 130,915,652.46
5. Step 5: Solve for x
   x = 130,915,652.46/12,792.78
6. Step 6: Final answer
   x = 10,233.56