Finding the Fourth Proportional to 16,956.33, 23,391.84 and 10,989.93

Step by Step Solution

1. Step 1: Write the proportion equation
   16,956.33 : 23,391.84 = 10,989.93 : x
2. Step 2: Convert to fraction form
   16,956.33/23,391.84 = 10,989.93/x
3. Step 3: Cross multiply
   16,956.33x = 23,391.84 × 10,989.93
4. Step 4: Simplify right side
   16,956.33x = 257,074,684.17
5. Step 5: Solve for x
   x = 257,074,684.17/16,956.33
6. Step 6: Final answer
   x = 15,160.99