Finding the Fourth Proportional to 13,026.29, 17,976.59 and 7,987.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,026.29 : 17,976.59 = 7,987.59 : x
2. Step 2: Convert to fraction form
   13,026.29/17,976.59 = 7,987.59/x
3. Step 3: Cross multiply
   13,026.29x = 17,976.59 × 7,987.59
4. Step 4: Simplify right side
   13,026.29x = 143,589,575.59
5. Step 5: Solve for x
   x = 143,589,575.59/13,026.29
6. Step 6: Final answer
   x = 11,023.06