Finding the Fourth Proportional to 12,792.78, 17,652.78 and 7,486.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,792.78 : 17,652.78 = 7,486.56 : x
2. Step 2: Convert to fraction form
   12,792.78/17,652.78 = 7,486.56/x
3. Step 3: Cross multiply
   12,792.78x = 17,652.78 × 7,486.56
4. Step 4: Simplify right side
   12,792.78x = 132,158,596.64
5. Step 5: Solve for x
   x = 132,158,596.64/12,792.78
6. Step 6: Final answer
   x = 10,330.72