Finding the Fourth Proportional to 31,384.89, 43,311.42 and 17,238.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,384.89 : 43,311.42 = 17,238.06 : x
2. Step 2: Convert to fraction form
   31,384.89/43,311.42 = 17,238.06/x
3. Step 3: Cross multiply
   31,384.89x = 43,311.42 × 17,238.06
4. Step 4: Simplify right side
   31,384.89x = 746,604,856.65
5. Step 5: Solve for x
   x = 746,604,856.65/31,384.89
6. Step 6: Final answer
   x = 23,788.67