Finding the Fourth Proportional to 21,960.18, 32,940.13 and 7,169.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,960.18 : 32,940.13 = 7,169.10 : x
2. Step 2: Convert to fraction form
   21,960.18/32,940.13 = 7,169.10/x
3. Step 3: Cross multiply
   21,960.18x = 32,940.13 × 7,169.10
4. Step 4: Simplify right side
   21,960.18x = 236,151,085.98
5. Step 5: Solve for x
   x = 236,151,085.98/21,960.18
6. Step 6: Final answer
   x = 10,753.60