Finding the Fourth Proportional to 16,931.03, 23,367.56 and 10,980

Step by Step Solution

1. Step 1: Write the proportion equation
   16,931.03 : 23,367.56 = 10,980 : x
2. Step 2: Convert to fraction form
   16,931.03/23,367.56 = 10,980/x
3. Step 3: Cross multiply
   16,931.03x = 23,367.56 × 10,980
4. Step 4: Simplify right side
   16,931.03x = 256,575,753.90
5. Step 5: Solve for x
   x = 256,575,753.90/16,931.03
6. Step 6: Final answer
   x = 15,154.18