Finding the Fourth Proportional to 16,956.89, 23,373.55 and 13,366.03

Step by Step Solution

1. Step 1: Write the proportion equation
   16,956.89 : 23,373.55 = 13,366.03 : x
2. Step 2: Convert to fraction form
   16,956.89/23,373.55 = 13,366.03/x
3. Step 3: Cross multiply
   16,956.89x = 23,373.55 × 13,366.03
4. Step 4: Simplify right side
   16,956.89x = 312,411,572.61
5. Step 5: Solve for x
   x = 312,411,572.61/16,956.89
6. Step 6: Final answer
   x = 18,423.87