Finding the Fourth Proportional to 21,210.27, 31,802.33 and 7,168.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,210.27 : 31,802.33 = 7,168.98 : x
2. Step 2: Convert to fraction form
   21,210.27/31,802.33 = 7,168.98/x
3. Step 3: Cross multiply
   21,210.27x = 31,802.33 × 7,168.98
4. Step 4: Simplify right side
   21,210.27x = 227,990,090.79
5. Step 5: Solve for x
   x = 227,990,090.79/21,210.27
6. Step 6: Final answer
   x = 10,749.04