Finding the Fourth Proportional to 31,406.79, 43,340.88 and 17,259.33

Step by Step Solution

1. Step 1: Write the proportion equation
   31,406.79 : 43,340.88 = 17,259.33 : x
2. Step 2: Convert to fraction form
   31,406.79/43,340.88 = 17,259.33/x
3. Step 3: Cross multiply
   31,406.79x = 43,340.88 × 17,259.33
4. Step 4: Simplify right side
   31,406.79x = 748,034,550.41
5. Step 5: Solve for x
   x = 748,034,550.41/31,406.79
6. Step 6: Final answer
   x = 23,817.61