Finding the Fourth Proportional to 12,796.03, 17,659.07 and 7,130.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,796.03 : 17,659.07 = 7,130.78 : x
2. Step 2: Convert to fraction form
   12,796.03/17,659.07 = 7,130.78/x
3. Step 3: Cross multiply
   12,796.03x = 17,659.07 × 7,130.78
4. Step 4: Simplify right side
   12,796.03x = 125,922,943.17
5. Step 5: Solve for x
   x = 125,922,943.17/12,796.03
6. Step 6: Final answer
   x = 9,840.78