Finding the Fourth Proportional to 31,434.56, 43,379.70 and 17,288.36

Step by Step Solution

1. Step 1: Write the proportion equation
   31,434.56 : 43,379.70 = 17,288.36 : x
2. Step 2: Convert to fraction form
   31,434.56/43,379.70 = 17,288.36/x
3. Step 3: Cross multiply
   31,434.56x = 43,379.70 × 17,288.36
4. Step 4: Simplify right side
   31,434.56x = 749,963,870.29
5. Step 5: Solve for x
   x = 749,963,870.29/31,434.56
6. Step 6: Final answer
   x = 23,857.94