Finding the Fourth Proportional to 17,872.93, 24,667.60 and 9,917.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,872.93 : 24,667.60 = 9,917.72 : x
2. Step 2: Convert to fraction form
   17,872.93/24,667.60 = 9,917.72/x
3. Step 3: Cross multiply
   17,872.93x = 24,667.60 × 9,917.72
4. Step 4: Simplify right side
   17,872.93x = 244,646,349.87
5. Step 5: Solve for x
   x = 244,646,349.87/17,872.93
6. Step 6: Final answer
   x = 13,688.09