Finding the Fourth Proportional to 12,388.37, 17,091.79 and 7,079.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,388.37 : 17,091.79 = 7,079.43 : x
2. Step 2: Convert to fraction form
   12,388.37/17,091.79 = 7,079.43/x
3. Step 3: Cross multiply
   12,388.37x = 17,091.79 × 7,079.43
4. Step 4: Simplify right side
   12,388.37x = 121,000,113.18
5. Step 5: Solve for x
   x = 121,000,113.18/12,388.37
6. Step 6: Final answer
   x = 9,767.23