Finding the Fourth Proportional to 39,981.72, 55,156.50 and 23,205

Step by Step Solution

1. Step 1: Write the proportion equation
   39,981.72 : 55,156.50 = 23,205 : x
2. Step 2: Convert to fraction form
   39,981.72/55,156.50 = 23,205/x
3. Step 3: Cross multiply
   39,981.72x = 55,156.50 × 23,205
4. Step 4: Simplify right side
   39,981.72x = 1,279,906,582.50
5. Step 5: Solve for x
   x = 1,279,906,582.50/39,981.72
6. Step 6: Final answer
   x = 32,012.29