Finding the Fourth Proportional to 16,617.50, 22,931.34 and 9,902.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,617.50 : 22,931.34 = 9,902.98 : x
2. Step 2: Convert to fraction form
   16,617.50/22,931.34 = 9,902.98/x
3. Step 3: Cross multiply
   16,617.50x = 22,931.34 × 9,902.98
4. Step 4: Simplify right side
   16,617.50x = 227,088,601.39
5. Step 5: Solve for x
   x = 227,088,601.39/16,617.50
6. Step 6: Final answer
   x = 13,665.63