Finding the Fourth Proportional to 31,385.13, 43,311.78 and 17,238.27

Step by Step Solution

1. Step 1: Write the proportion equation
   31,385.13 : 43,311.78 = 17,238.27 : x
2. Step 2: Convert to fraction form
   31,385.13/43,311.78 = 17,238.27/x
3. Step 3: Cross multiply
   31,385.13x = 43,311.78 × 17,238.27
4. Step 4: Simplify right side
   31,385.13x = 746,620,157.82
5. Step 5: Solve for x
   x = 746,620,157.82/31,385.13
6. Step 6: Final answer
   x = 23,788.98