Finding the Fourth Proportional to 31,536, 43,518.60 and 17,388

Step by Step Solution

1. Step 1: Write the proportion equation
   31,536 : 43,518.60 = 17,388 : x
2. Step 2: Convert to fraction form
   31,536/43,518.60 = 17,388/x
3. Step 3: Cross multiply
   31,536x = 43,518.60 × 17,388
4. Step 4: Simplify right side
   31,536x = 756,701,416.80
5. Step 5: Solve for x
   x = 756,701,416.80/31,536
6. Step 6: Final answer
   x = 23,994.84