Finding the Fourth Proportional to 21,385.30, 32,078.38 and 7,345.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,385.30 : 32,078.38 = 7,345.24 : x
2. Step 2: Convert to fraction form
   21,385.30/32,078.38 = 7,345.24/x
3. Step 3: Cross multiply
   21,385.30x = 32,078.38 × 7,345.24
4. Step 4: Simplify right side
   21,385.30x = 235,623,399.91
5. Step 5: Solve for x
   x = 235,623,399.91/21,385.30
6. Step 6: Final answer
   x = 11,018.01