Finding the Fourth Proportional to 21,562.10, 32,152.72 and 18,940.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,562.10 : 32,152.72 = 18,940.34 : x
2. Step 2: Convert to fraction form
   21,562.10/32,152.72 = 18,940.34/x
3. Step 3: Cross multiply
   21,562.10x = 32,152.72 × 18,940.34
4. Step 4: Simplify right side
   21,562.10x = 608,983,448.72
5. Step 5: Solve for x
   x = 608,983,448.72/21,562.10
6. Step 6: Final answer
   x = 28,243.23