Finding the Fourth Proportional to 21,906.72, 32,864.76 and 7,117.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,906.72 : 32,864.76 = 7,117.02 : x
2. Step 2: Convert to fraction form
   21,906.72/32,864.76 = 7,117.02/x
3. Step 3: Cross multiply
   21,906.72x = 32,864.76 × 7,117.02
4. Step 4: Simplify right side
   21,906.72x = 233,899,154.22
5. Step 5: Solve for x
   x = 233,899,154.22/21,906.72
6. Step 6: Final answer
   x = 10,677.05