Finding the Fourth Proportional to 11,832.63, 16,327.94 and 8,690.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,832.63 : 16,327.94 = 8,690.55 : x
2. Step 2: Convert to fraction form
   11,832.63/16,327.94 = 8,690.55/x
3. Step 3: Cross multiply
   11,832.63x = 16,327.94 × 8,690.55
4. Step 4: Simplify right side
   11,832.63x = 141,898,735.51
5. Step 5: Solve for x
   x = 141,898,735.51/11,832.63
6. Step 6: Final answer
   x = 11,992.16