Finding the Fourth Proportional to 10,215.81, 14,111.69 and 8,005.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,215.81 : 14,111.69 = 8,005.59 : x
2. Step 2: Convert to fraction form
   10,215.81/14,111.69 = 8,005.59/x
3. Step 3: Cross multiply
   10,215.81x = 14,111.69 × 8,005.59
4. Step 4: Simplify right side
   10,215.81x = 112,972,364.32
5. Step 5: Solve for x
   x = 112,972,364.32/10,215.81
6. Step 6: Final answer
   x = 11,058.58