Finding the Fourth Proportional to 16,709.52, 23,058.44 and 9,991.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,709.52 : 23,058.44 = 9,991.18 : x
2. Step 2: Convert to fraction form
   16,709.52/23,058.44 = 9,991.18/x
3. Step 3: Cross multiply
   16,709.52x = 23,058.44 × 9,991.18
4. Step 4: Simplify right side
   16,709.52x = 230,381,040.89
5. Step 5: Solve for x
   x = 230,381,040.89/16,709.52
6. Step 6: Final answer
   x = 13,787.41