Finding the Fourth Proportional to 31,412.89, 43,352.27 and 17,988.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,412.89 : 43,352.27 = 17,988.37 : x
2. Step 2: Convert to fraction form
   31,412.89/43,352.27 = 17,988.37/x
3. Step 3: Cross multiply
   31,412.89x = 43,352.27 × 17,988.37
4. Step 4: Simplify right side
   31,412.89x = 779,836,673.10
5. Step 5: Solve for x
   x = 779,836,673.10/31,412.89
6. Step 6: Final answer
   x = 24,825.37