Finding the Fourth Proportional to 31,536.52, 43,518.54 and 18,105.64

Step by Step Solution

1. Step 1: Write the proportion equation
   31,536.52 : 43,518.54 = 18,105.64 : x
2. Step 2: Convert to fraction form
   31,536.52/43,518.54 = 18,105.64/x
3. Step 3: Cross multiply
   31,536.52x = 43,518.54 × 18,105.64
4. Step 4: Simplify right side
   31,536.52x = 787,931,018.57
5. Step 5: Solve for x
   x = 787,931,018.57/31,536.52
6. Step 6: Final answer
   x = 24,984.72