Finding the Fourth Proportional to 31,435.32, 43,379.88 and 17,288.17

Step by Step Solution

1. Step 1: Write the proportion equation
   31,435.32 : 43,379.88 = 17,288.17 : x
2. Step 2: Convert to fraction form
   31,435.32/43,379.88 = 17,288.17/x
3. Step 3: Cross multiply
   31,435.32x = 43,379.88 × 17,288.17
4. Step 4: Simplify right side
   31,435.32x = 749,958,631.57
5. Step 5: Solve for x
   x = 749,958,631.57/31,435.32
6. Step 6: Final answer
   x = 23,857.20