Finding the Fourth Proportional to 21,719.55, 32,558.52 and 6,920.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,719.55 : 32,558.52 = 6,920.31 : x
2. Step 2: Convert to fraction form
   21,719.55/32,558.52 = 6,920.31/x
3. Step 3: Cross multiply
   21,719.55x = 32,558.52 × 6,920.31
4. Step 4: Simplify right side
   21,719.55x = 225,315,051.54
5. Step 5: Solve for x
   x = 225,315,051.54/21,719.55
6. Step 6: Final answer
   x = 10,373.84