Finding the Fourth Proportional to 23,107.31, 31,888.05 and 13,035.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,107.31 : 31,888.05 = 13,035.72 : x
2. Step 2: Convert to fraction form
   23,107.31/31,888.05 = 13,035.72/x
3. Step 3: Cross multiply
   23,107.31x = 31,888.05 × 13,035.72
4. Step 4: Simplify right side
   23,107.31x = 415,683,691.15
5. Step 5: Solve for x
   x = 415,683,691.15/23,107.31
6. Step 6: Final answer
   x = 17,989.27