Finding the Fourth Proportional to 21,352.91, 32,025.72 and 10,109.30

Step by Step Solution

1. Step 1: Write the proportion equation
   21,352.91 : 32,025.72 = 10,109.30 : x
2. Step 2: Convert to fraction form
   21,352.91/32,025.72 = 10,109.30/x
3. Step 3: Cross multiply
   21,352.91x = 32,025.72 × 10,109.30
4. Step 4: Simplify right side
   21,352.91x = 323,757,611.20
5. Step 5: Solve for x
   x = 323,757,611.20/21,352.91
6. Step 6: Final answer
   x = 15,162.22