Finding the Fourth Proportional to 13,026.25, 17,976.55 and 7,987.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,026.25 : 17,976.55 = 7,987.58 : x
2. Step 2: Convert to fraction form
   13,026.25/17,976.55 = 7,987.58/x
3. Step 3: Cross multiply
   13,026.25x = 17,976.55 × 7,987.58
4. Step 4: Simplify right side
   13,026.25x = 143,589,041.37
5. Step 5: Solve for x
   x = 143,589,041.37/13,026.25
6. Step 6: Final answer
   x = 11,023.06