Finding the Fourth Proportional to 14,196.63, 21,273.04 and 8,991.57

Step by Step Solution

1. Step 1: Write the proportion equation
   14,196.63 : 21,273.04 = 8,991.57 : x
2. Step 2: Convert to fraction form
   14,196.63/21,273.04 = 8,991.57/x
3. Step 3: Cross multiply
   14,196.63x = 21,273.04 × 8,991.57
4. Step 4: Simplify right side
   14,196.63x = 191,278,028.27
5. Step 5: Solve for x
   x = 191,278,028.27/14,196.63
6. Step 6: Final answer
   x = 13,473.48