Finding the Fourth Proportional to 17,146.27, 23,664.79 and 9,980.34

Step by Step Solution

1. Step 1: Write the proportion equation
   17,146.27 : 23,664.79 = 9,980.34 : x
2. Step 2: Convert to fraction form
   17,146.27/23,664.79 = 9,980.34/x
3. Step 3: Cross multiply
   17,146.27x = 23,664.79 × 9,980.34
4. Step 4: Simplify right side
   17,146.27x = 236,182,650.23
5. Step 5: Solve for x
   x = 236,182,650.23/17,146.27
6. Step 6: Final answer
   x = 13,774.58