Finding the Fourth Proportional to 23,200.80, 32,020.56 and 19,418.40

Step by Step Solution

1. Step 1: Write the proportion equation
   23,200.80 : 32,020.56 = 19,418.40 : x
2. Step 2: Convert to fraction form
   23,200.80/32,020.56 = 19,418.40/x
3. Step 3: Cross multiply
   23,200.80x = 32,020.56 × 19,418.40
4. Step 4: Simplify right side
   23,200.80x = 621,788,042.30
5. Step 5: Solve for x
   x = 621,788,042.30/23,200.80
6. Step 6: Final answer
   x = 26,800.28