Finding the Fourth Proportional to 31,518.36, 43,515.59 and 19,597.91

Step by Step Solution

1. Step 1: Write the proportion equation
   31,518.36 : 43,515.59 = 19,597.91 : x
2. Step 2: Convert to fraction form
   31,518.36/43,515.59 = 19,597.91/x
3. Step 3: Cross multiply
   31,518.36x = 43,515.59 × 19,597.91
4. Step 4: Simplify right side
   31,518.36x = 852,814,300.85
5. Step 5: Solve for x
   x = 852,814,300.85/31,518.36
6. Step 6: Final answer
   x = 27,057.70