Finding the Fourth Proportional to 23,089.42, 31,862.19 and 13,017.88

Step by Step Solution

1. Step 1: Write the proportion equation
   23,089.42 : 31,862.19 = 13,017.88 : x
2. Step 2: Convert to fraction form
   23,089.42/31,862.19 = 13,017.88/x
3. Step 3: Cross multiply
   23,089.42x = 31,862.19 × 13,017.88
4. Step 4: Simplify right side
   23,089.42x = 414,778,165.96
5. Step 5: Solve for x
   x = 414,778,165.96/23,089.42
6. Step 6: Final answer
   x = 17,963.99