Finding the Fourth Proportional to 14,426.72, 19,893.16 and 9,381.57

Step by Step Solution

1. Step 1: Write the proportion equation
   14,426.72 : 19,893.16 = 9,381.57 : x
2. Step 2: Convert to fraction form
   14,426.72/19,893.16 = 9,381.57/x
3. Step 3: Cross multiply
   14,426.72x = 19,893.16 × 9,381.57
4. Step 4: Simplify right side
   14,426.72x = 186,629,026.15
5. Step 5: Solve for x
   x = 186,629,026.15/14,426.72
6. Step 6: Final answer
   x = 12,936.35