Finding the Fourth Proportional to 31,436.06, 43,381.05 and 17,288.60

Step by Step Solution

1. Step 1: Write the proportion equation
   31,436.06 : 43,381.05 = 17,288.60 : x
2. Step 2: Convert to fraction form
   31,436.06/43,381.05 = 17,288.60/x
3. Step 3: Cross multiply
   31,436.06x = 43,381.05 × 17,288.60
4. Step 4: Simplify right side
   31,436.06x = 749,997,621.03
5. Step 5: Solve for x
   x = 749,997,621.03/31,436.06
6. Step 6: Final answer
   x = 23,857.88