Finding the Fourth Proportional to 23,086.96, 31,858.10 and 13,017.88

Step by Step Solution

1. Step 1: Write the proportion equation
   23,086.96 : 31,858.10 = 13,017.88 : x
2. Step 2: Convert to fraction form
   23,086.96/31,858.10 = 13,017.88/x
3. Step 3: Cross multiply
   23,086.96x = 31,858.10 × 13,017.88
4. Step 4: Simplify right side
   23,086.96x = 414,724,922.83
5. Step 5: Solve for x
   x = 414,724,922.83/23,086.96
6. Step 6: Final answer
   x = 17,963.60